Physical Review: Metal-insulator transitions http://publish.aps.org/ Metal-insulator transitions articles published in Physical Review Journals hourly 1 2012-02-09T21:06:13-05:00 rss@aps.org assocpub@aps.org 2012-02-09T21:06:13-05:00 en Copyright © 2012 the American Physical Society. Personal use only, all commercial or other reuse prohibited Copyright © 2012 the American Physical Society assocpub@aps.org Metal-to-Insulator Transition and Electron-Hole Puddle Formation in Disordered Graphene Nanoribbons http://link.aps.org/doi/10.1103/PhysRevLett.108.066402 Author(s): Gerald Schubert and Holger Fehske<br/><p>The experimentally observed metal-to-insulator transition in hydrogenated graphene is numerically confirmed for actual sized graphene samples and realistic impurity concentrations. The eigenstates of our tight-binding model with substitutional disorder corroborate the formation of electron-hole pudd...</p><br/>[Phys. Rev. Lett. 108, 066402] Published Thu Feb 09, 2012 Author(s): Gerald Schubert and Holger Fehske

The experimentally observed metal-to-insulator transition in hydrogenated graphene is numerically confirmed for actual sized graphene samples and realistic impurity concentrations. The eigenstates of our tight-binding model with substitutional disorder corroborate the formation of electron-hole pudd...

[Phys. Rev. Lett. 108, 066402] Published Thu Feb 09, 2012

]]> Metal-to-Insulator Transition and Electron-Hole Puddle Formation in Disordered Graphene Nanoribbons Gerald Schubert and Holger Fehske 2012-02-09T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevLett.108.066402 Phys. Rev. Lett. 108, 066402 (2012) article Physical Review Letters 108 6 2012-02-09T10:00:00-05:00 10.1103/PhysRevLett.108.066402 http://link.aps.org/doi/10.1103/PhysRevLett.108.066402 066402 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Extended dual description of Mott transition beyond two-dimensional space http://link.aps.org/doi/10.1103/PhysRevB.85.075106 Author(s): Yin Zhong, Ke Liu, and Hong-Gang Luo<br/><p>Motivated by the recent paper of Mross and Senthil [ <a href="http://dx.doi.org/10.1103/PhysRevB.84.165126"> Phys. Rev. B <span style="font-weight: bold;">84</span> 165126 (2011)</a>], which provides a dual description for a Mott transition from a Fermi liquid to a quantum-spin liquid in two space dimensions, we extend their approach to higher-dimensional cases, and we provide explicit formalism ...</p><br/>[Phys. Rev. B 85, 075106] Published Tue Feb 07, 2012 Author(s): Yin Zhong, Ke Liu, and Hong-Gang Luo

Motivated by the recent paper of Mross and Senthil [ Phys. Rev. B 84 165126 (2011)], which provides a dual description for a Mott transition from a Fermi liquid to a quantum-spin liquid in two space dimensions, we extend their approach to higher-dimensional cases, and we provide explicit formalism ...

[Phys. Rev. B 85, 075106] Published Tue Feb 07, 2012

]]> Extended dual description of Mott transition beyond two-dimensional space Yin Zhong, Ke Liu, and Hong-Gang Luo 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.075106 Phys. Rev. B 85, 075106 (2012) article Physical Review B 85 7 2012-02-07T10:00:00-05:00 10.1103/PhysRevB.85.075106 http://link.aps.org/doi/10.1103/PhysRevB.85.075106 075106 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Coexisting pseudogap, charge-transfer-gap, and Mott-gap energy scales in the resonant inelastic x-ray scattering spectra of electron-doped cuprate superconductors http://link.aps.org/doi/10.1103/PhysRevB.85.075104 Author(s): Susmita Basak, Tanmoy Das, Hsin Lin, M. Z. Hasan, R. S. Markiewicz, and A. Bansil<br/><p>We present a computation of Cu <span><span style="font-style: italic;">K</span></span>-edge resonant inelastic x-ray scattering (RIXS) spectra for electron-doped cuprates, which includes coupling to bosonic fluctuations. Comparison with experiment over a wide range of energy and momentum transfers allows us to identify the signatures of three key norma...</p><br/>[Phys. Rev. B 85, 075104] Published Mon Feb 06, 2012 Author(s): Susmita Basak, Tanmoy Das, Hsin Lin, M. Z. Hasan, R. S. Markiewicz, and A. Bansil

We present a computation of Cu K-edge resonant inelastic x-ray scattering (RIXS) spectra for electron-doped cuprates, which includes coupling to bosonic fluctuations. Comparison with experiment over a wide range of energy and momentum transfers allows us to identify the signatures of three key norma...

[Phys. Rev. B 85, 075104] Published Mon Feb 06, 2012

]]> Coexisting pseudogap, charge-transfer-gap, and Mott-gap energy scales in the resonant inelastic x-ray scattering spectra of electron-doped cuprate superconductors Susmita Basak, Tanmoy Das, Hsin Lin, M. Z. Hasan, R. S. Markiewicz, and A. Bansil 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.075104 Phys. Rev. B 85, 075104 (2012) article Physical Review B 85 7 2012-02-06T10:00:00-05:00 10.1103/PhysRevB.85.075104 http://link.aps.org/doi/10.1103/PhysRevB.85.075104 075104 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Density-wave–supersolid and Mott-insulator–superfluid transitions in the presence of an artificial gauge field: A strong-coupling perturbation approach http://link.aps.org/doi/10.1103/PhysRevA.85.013642 Author(s): Rashi Sachdeva and Sankalpa Ghosh<br/><p>We study the effect of an artificial gauge field on the zero-temperature phase diagram of an extended Bose-Hubbard model that describes ultracold atoms in optical lattices with long-range interactions by using strong-coupling perturbation theory. We determine analytically the effect of the artificia...</p><br/>[Phys. Rev. A 85, 013642] Published Tue Jan 31, 2012 Author(s): Rashi Sachdeva and Sankalpa Ghosh

We study the effect of an artificial gauge field on the zero-temperature phase diagram of an extended Bose-Hubbard model that describes ultracold atoms in optical lattices with long-range interactions by using strong-coupling perturbation theory. We determine analytically the effect of the artificia...

[Phys. Rev. A 85, 013642] Published Tue Jan 31, 2012

]]> Density-wave–supersolid and Mott-insulator–superfluid transitions in the presence of an artificial gauge field: A strong-coupling perturbation approach Rashi Sachdeva and Sankalpa Ghosh 2012-01-31T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013642 Phys. Rev. A 85, 013642 (2012) article Physical Review A 85 1 2012-01-31T10:00:00-05:00 10.1103/PhysRevA.85.013642 http://link.aps.org/doi/10.1103/PhysRevA.85.013642 013642 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Polar charge and orbital order in 2H-TaS_{2} http://link.aps.org/doi/10.1103/PhysRevB.85.035131 Author(s): Jasper van Wezel<br/><p>It was recently discovered that in spite of the scalar nature of its order parameter, the charge order in <span>1<span style="font-style: italic;">T</span></span>-TiSe<span><sub>2</sub></span> can be chiral. This is made possible by the emergence of orbital order in conjunction with the charge-density modulations. Here we show that a closely related charge and orbital ordered...</p><br/>[Phys. Rev. B 85, 035131] Published Tue Jan 31, 2012 Author(s): Jasper van Wezel

It was recently discovered that in spite of the scalar nature of its order parameter, the charge order in 1T-TiSe2 can be chiral. This is made possible by the emergence of orbital order in conjunction with the charge-density modulations. Here we show that a closely related charge and orbital ordered...

[Phys. Rev. B 85, 035131] Published Tue Jan 31, 2012

]]> Polar charge and orbital order in 2H-TaS_{2} Jasper van Wezel 2012-01-31T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.035131 Phys. Rev. B 85, 035131 (2012) article Physical Review B 85 3 2012-01-31T10:00:00-05:00 10.1103/PhysRevB.85.035131 http://link.aps.org/doi/10.1103/PhysRevB.85.035131 035131 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Observation of a first-order metal-to-nonmetal phase transition in fluid iron http://link.aps.org/doi/10.1103/PhysRevB.85.014208 Author(s): V. N. Korobenko and A. D. Rakhel<br/><p>Measurements of electrical resistivity and caloric equation of state have been performed for fluid iron to investigate the metal-to-nonmetal transition induced by thermal expansion. The resistivity results published earlier [V. N. Korobenko and A. D. Rakhel, <a href="http://dx.doi.org/10.1134/S1063776111020178"> JETP <span style="font-weight: bold;">112</span> 649 (2011)</a>] have revealed the ...</p><br/>[Phys. Rev. B 85, 014208] Published Mon Jan 30, 2012 Author(s): V. N. Korobenko and A. D. Rakhel

Measurements of electrical resistivity and caloric equation of state have been performed for fluid iron to investigate the metal-to-nonmetal transition induced by thermal expansion. The resistivity results published earlier [V. N. Korobenko and A. D. Rakhel, JETP 112 649 (2011)] have revealed the ...

[Phys. Rev. B 85, 014208] Published Mon Jan 30, 2012

]]> Observation of a first-order metal-to-nonmetal phase transition in fluid iron V. N. Korobenko and A. D. Rakhel 2012-01-30T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.014208 Phys. Rev. B 85, 014208 (2012) article Physical Review B 85 1 2012-01-30T10:00:00-05:00 10.1103/PhysRevB.85.014208 http://link.aps.org/doi/10.1103/PhysRevB.85.014208 014208 Inhomogeneous, disordered, and partially ordered systems Inhomogeneous, disordered, and partially ordered systems Characterization of low-frequency noise in the resistive switching of transition metal oxide HfO_{2} http://link.aps.org/doi/10.1103/PhysRevB.85.045324 Author(s): Shimeng Yu, Rakesh Jeyasingh, Yi Wu, and H.-S. Philip Wong<br/><p>Low-frequency noise measurements were performed on HfO<span><sub>2</sub></span>-based bipolar resistive switching memory devices. A 1/<span><span style="font-style: italic;">f</span><sup><span style="font-style: italic;">α</span></sup></span> DC noise power spectral density was observed with α ∼ 1 for a low resistance state and α ∼ 2 for a high resistance state. We developed an electron tunneling model to elucidate the conduct...</p><br/>[Phys. Rev. B 85, 045324] Published Mon Jan 30, 2012 Author(s): Shimeng Yu, Rakesh Jeyasingh, Yi Wu, and H.-S. Philip Wong

Low-frequency noise measurements were performed on HfO2-based bipolar resistive switching memory devices. A 1/fα DC noise power spectral density was observed with α ∼ 1 for a low resistance state and α ∼ 2 for a high resistance state. We developed an electron tunneling model to elucidate the conduct...

[Phys. Rev. B 85, 045324] Published Mon Jan 30, 2012

]]> Characterization of low-frequency noise in the resistive switching of transition metal oxide HfO_{2} Shimeng Yu, Rakesh Jeyasingh, Yi Wu, and H.-S. Philip Wong 2012-01-30T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.045324 Phys. Rev. B 85, 045324 (2012) article Physical Review B 85 4 2012-01-30T10:00:00-05:00 10.1103/PhysRevB.85.045324 http://link.aps.org/doi/10.1103/PhysRevB.85.045324 045324 Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics X-Ray Diagnosis of the Pressure Induced Mott Nonmetal-Metal Transition http://link.aps.org/doi/10.1103/PhysRevLett.108.055002 Author(s): A. Lévy, F. Dorchies, A. Benuzzi-Mounaix, A. Ravasio, F. Festa, V. Recoules, O. Peyrusse, N. Amadou, E. Brambrink, T. Hall, M. Koenig, and S. Mazevet<br/><p>The evolution of the <span><span style="font-style: italic;">K</span></span>-edge x-ray absorption near-edge spectroscopy (XANES) spectrum is investigated for an aluminum plasma expanding from the solid density down to <span>0.5  g/cm<sup>3</sup></span>, with temperatures lying from 5 down to 2 eV. The dense plasma is generated by nanosecond laser-induced shock compression. T...</p><br/>[Phys. Rev. Lett. 108, 055002] Published Mon Jan 30, 2012 Author(s): A. Lévy, F. Dorchies, A. Benuzzi-Mounaix, A. Ravasio, F. Festa, V. Recoules, O. Peyrusse, N. Amadou, E. Brambrink, T. Hall, M. Koenig, and S. Mazevet

The evolution of the K-edge x-ray absorption near-edge spectroscopy (XANES) spectrum is investigated for an aluminum plasma expanding from the solid density down to 0.5  g/cm3, with temperatures lying from 5 down to 2 eV. The dense plasma is generated by nanosecond laser-induced shock compression. T...

[Phys. Rev. Lett. 108, 055002] Published Mon Jan 30, 2012

]]> X-Ray Diagnosis of the Pressure Induced Mott Nonmetal-Metal Transition A. Lévy, F. Dorchies, A. Benuzzi-Mounaix, A. Ravasio, F. Festa, V. Recoules, O. Peyrusse, N. Amadou, E. Brambrink, T. Hall, M. Koenig, and S. Mazevet 2012-01-30T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevLett.108.055002 Phys. Rev. Lett. 108, 055002 (2012) article Physical Review Letters 108 5 2012-01-30T10:00:00-05:00 10.1103/PhysRevLett.108.055002 http://link.aps.org/doi/10.1103/PhysRevLett.108.055002 055002 Plasma and Beam Physics Plasma and Beam Physics Strong thermalization of the two-component Bose-Hubbard model at finite temperatures http://link.aps.org/doi/10.1103/PhysRevA.85.013637 Author(s): J. M. Zhang, C. Shen, and W. M. Liu<br/><p>We study thermalization of a two-component Bose-Hubbard model by exact diagonalization. Initially, the two components do not interact and are both at equilibrium but with different temperatures. As the onsite intercomponent interaction is turned on, perfect thermalization occurs. Remarkably, not mer...</p><br/>[Phys. Rev. A 85, 013637] Published Fri Jan 27, 2012 Author(s): J. M. Zhang, C. Shen, and W. M. Liu

We study thermalization of a two-component Bose-Hubbard model by exact diagonalization. Initially, the two components do not interact and are both at equilibrium but with different temperatures. As the onsite intercomponent interaction is turned on, perfect thermalization occurs. Remarkably, not mer...

[Phys. Rev. A 85, 013637] Published Fri Jan 27, 2012

]]> Strong thermalization of the two-component Bose-Hubbard model at finite temperatures J. M. Zhang, C. Shen, and W. M. Liu 2012-01-27T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013637 Phys. Rev. A 85, 013637 (2012) article Physical Review A 85 1 2012-01-27T10:00:00-05:00 10.1103/PhysRevA.85.013637 http://link.aps.org/doi/10.1103/PhysRevA.85.013637 013637 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Orbital-order melting in rare-earth manganites: Role of superexchange http://link.aps.org/doi/10.1103/PhysRevB.85.035124 Author(s): Andreas Flesch, Guoren Zhang, Erik Koch, and Eva Pavarini<br/><p>We study the mechanism of orbital-order melting observed at temperature <span><span style="font-style: italic;">T</span><sub>OO</sub></span> in the series of rare-earth manganites. We find that the purely electronic many-body super-exchange mechanism yields a transition temperature <span><span style="font-style: italic;">T</span><sub>KK</sub></span> that decreases with decreasing rare-earth radius and increases with pressure, ...</p><br/>[Phys. Rev. B 85, 035124] Published Thu Jan 26, 2012 Author(s): Andreas Flesch, Guoren Zhang, Erik Koch, and Eva Pavarini

We study the mechanism of orbital-order melting observed at temperature TOO in the series of rare-earth manganites. We find that the purely electronic many-body super-exchange mechanism yields a transition temperature TKK that decreases with decreasing rare-earth radius and increases with pressure, ...

[Phys. Rev. B 85, 035124] Published Thu Jan 26, 2012

]]> Orbital-order melting in rare-earth manganites: Role of superexchange Andreas Flesch, Guoren Zhang, Erik Koch, and Eva Pavarini 2012-01-26T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.035124 Phys. Rev. B 85, 035124 (2012) article Physical Review B 85 3 2012-01-26T10:00:00-05:00 10.1103/PhysRevB.85.035124 http://link.aps.org/doi/10.1103/PhysRevB.85.035124 035124 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems General mechanism for orbital selective phase transitions http://link.aps.org/doi/10.1103/PhysRevB.85.035123 Author(s): Yu-Zhong Zhang, Hunpyo Lee, Hai-Qing Lin, Chang-Qin Wu, Harald O. Jeschke, and Roser Valentí<br/><p>Based on the analysis of a two-orbital Hubbard model within a mean-field approach, we propose a mechanism for an orbital selective phase transition (OSPT) where coexistence of localized and itinerant electrons can be realized. We show that this OSPT exists both at and near half-filling even in the a...</p><br/>[Phys. Rev. B 85, 035123] Published Thu Jan 26, 2012 Author(s): Yu-Zhong Zhang, Hunpyo Lee, Hai-Qing Lin, Chang-Qin Wu, Harald O. Jeschke, and Roser Valentí

Based on the analysis of a two-orbital Hubbard model within a mean-field approach, we propose a mechanism for an orbital selective phase transition (OSPT) where coexistence of localized and itinerant electrons can be realized. We show that this OSPT exists both at and near half-filling even in the a...

[Phys. Rev. B 85, 035123] Published Thu Jan 26, 2012

]]> General mechanism for orbital selective phase transitions Yu-Zhong Zhang, Hunpyo Lee, Hai-Qing Lin, Chang-Qin Wu, Harald O. Jeschke, and Roser Valentí 2012-01-26T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.035123 Phys. Rev. B 85, 035123 (2012) article Physical Review B 85 3 2012-01-26T10:00:00-05:00 10.1103/PhysRevB.85.035123 http://link.aps.org/doi/10.1103/PhysRevB.85.035123 035123 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Magnetic-Field Probing of an SU(4) Kondo Resonance in a Single-Atom Transistor http://link.aps.org/doi/10.1103/PhysRevLett.108.046803 Author(s): G. C. Tettamanzi, J. Verduijn, G. P. Lansbergen, M. Blaauboer, M. J. Calderón, R. Aguado, and S. Rogge<br/><p>Semiconductor devices have been scaled to the point that transport can be dominated by only a single dopant atom. As a result, in a Si fin-type field effect transistor Kondo physics can govern transport when one electron is bound to the single dopant. Orbital (valley) degrees of freedom, apart from ...</p><br/>[Phys. Rev. Lett. 108, 046803] Published Wed Jan 25, 2012 Author(s): G. C. Tettamanzi, J. Verduijn, G. P. Lansbergen, M. Blaauboer, M. J. Calderón, R. Aguado, and S. Rogge

Semiconductor devices have been scaled to the point that transport can be dominated by only a single dopant atom. As a result, in a Si fin-type field effect transistor Kondo physics can govern transport when one electron is bound to the single dopant. Orbital (valley) degrees of freedom, apart from ...

[Phys. Rev. Lett. 108, 046803] Published Wed Jan 25, 2012

]]> Magnetic-Field Probing of an SU(4) Kondo Resonance in a Single-Atom Transistor G. C. Tettamanzi, J. Verduijn, G. P. Lansbergen, M. Blaauboer, M. J. Calderón, R. Aguado, and S. Rogge 2012-01-25T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevLett.108.046803 Phys. Rev. Lett. 108, 046803 (2012) article Physical Review Letters 108 4 2012-01-25T10:00:00-05:00 10.1103/PhysRevLett.108.046803 http://link.aps.org/doi/10.1103/PhysRevLett.108.046803 046803 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Non-Gaussian resistance noise in the ferromagnetic insulating state of a hole-doped manganite http://link.aps.org/doi/10.1103/PhysRevB.85.045127 Author(s): Sudeshna Samanta, A. K. Raychaudhuri, and Ya. M. Mukhovskii<br/><p>We report the observation of a large <span>1/<span style="font-style: italic;">f</span></span> noise in the ferromagnetic insulating state (FMI) of a hole doped manganite single crystal of <span>La<sub>0.80</sub>Ca<sub>0.20</sub>MnO<sub>3</sub></span>, which manifests hopping conductivity in the presence of a Coulomb gap. The temperature-dependent noise magnitude decreases in the FMI state indicat...</p><br/>[Phys. Rev. B 85, 045127] Published Wed Jan 25, 2012 Author(s): Sudeshna Samanta, A. K. Raychaudhuri, and Ya. M. Mukhovskii

We report the observation of a large 1/f noise in the ferromagnetic insulating state (FMI) of a hole doped manganite single crystal of La0.80Ca0.20MnO3, which manifests hopping conductivity in the presence of a Coulomb gap. The temperature-dependent noise magnitude decreases in the FMI state indicat...

[Phys. Rev. B 85, 045127] Published Wed Jan 25, 2012

]]> Non-Gaussian resistance noise in the ferromagnetic insulating state of a hole-doped manganite Sudeshna Samanta, A. K. Raychaudhuri, and Ya. M. Mukhovskii 2012-01-25T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.045127 Phys. Rev. B 85, 045127 (2012) article Physical Review B 85 4 2012-01-25T10:00:00-05:00 10.1103/PhysRevB.85.045127 http://link.aps.org/doi/10.1103/PhysRevB.85.045127 045127 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Imaging of 3d Mn orbitals in the ferromagnetic state for Ca-substituted manganite: Magnetic Compton investigation http://link.aps.org/doi/10.1103/PhysRevB.85.045128 Author(s): Christopher Rumble, M. Itou, N. Hiraoka, Y. Sakurai, Y. Tomioka, Y. Tokura, James E. Penner-Hahn, and Aniruddha Deb<br/><p>The 3<span><span style="font-style: italic;">d</span></span> Mn orbitals in Pr<span><sub>0.25</sub></span>Ca<span><sub>0.25</sub></span>MnO<span><sub>3</sub></span> (PCMO), in the ferromagnetic phase, were imaged by two-dimensional reconstruction of spin-polarized electron-momentum density projected along the [100] and [110] principal directions. The results were analyzed using a molecular-orbital scheme to understand the ...</p><br/>[Phys. Rev. B 85, 045128] Published Wed Jan 25, 2012 Author(s): Christopher Rumble, M. Itou, N. Hiraoka, Y. Sakurai, Y. Tomioka, Y. Tokura, James E. Penner-Hahn, and Aniruddha Deb

The 3d Mn orbitals in Pr0.25Ca0.25MnO3 (PCMO), in the ferromagnetic phase, were imaged by two-dimensional reconstruction of spin-polarized electron-momentum density projected along the [100] and [110] principal directions. The results were analyzed using a molecular-orbital scheme to understand the ...

[Phys. Rev. B 85, 045128] Published Wed Jan 25, 2012

]]> Imaging of 3d Mn orbitals in the ferromagnetic state for Ca-substituted manganite: Magnetic Compton investigation Christopher Rumble, M. Itou, N. Hiraoka, Y. Sakurai, Y. Tomioka, Y. Tokura, James E. Penner-Hahn, and Aniruddha Deb 2012-01-25T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.045128 Phys. Rev. B 85, 045128 (2012) article Physical Review B 85 4 2012-01-25T10:00:00-05:00 10.1103/PhysRevB.85.045128 http://link.aps.org/doi/10.1103/PhysRevB.85.045128 045128 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems First-principles study of the electronic structure and magnetism of CaIrO_{3} http://link.aps.org/doi/10.1103/PhysRevB.85.020408 Author(s): Alaska Subedi<br/><p>I study the electronic structure and magnetism of postperovskite CaIrO<span><sub>3</sub></span> using first-principles calculations. The density functional calculations within the local density approximation without the combined effect of spin-orbit coupling and on-site Coulomb repulsion show the system to be metallic, whi...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. B 85, 020408] Published Wed Jan 25, 2012 Author(s): Alaska Subedi

Rapid Communication I study the electronic structure and magnetism of postperovskite CaIrO3 using first-principles calculations. The density functional calculations within the local density approximation without the combined effect of spin-orbit coupling and on-site Coulomb repulsion show the system to be metallic, whi...

[Phys. Rev. B 85, 020408] Published Wed Jan 25, 2012

]]> First-principles study of the electronic structure and magnetism of CaIrO_{3} Alaska Subedi 2012-01-25T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.020408 Phys. Rev. B 85, 020408 (2012) article Physical Review B 85 2 2012-01-25T10:00:00-05:00 10.1103/PhysRevB.85.020408 http://link.aps.org/doi/10.1103/PhysRevB.85.020408 020408 Magnetism Magnetism Dynamical screening effects in correlated materials: Plasmon satellites and spectral weight transfers from a Green's function ansatz to extended dynamical mean field theory http://link.aps.org/doi/10.1103/PhysRevB.85.035115 Author(s): Michele Casula, Alexey Rubtsov, and Silke Biermann<br/><p>Dynamical screening of the Coulomb interactions in correlated electron systems results in a low-energy effective problem with a dynamical Hubbard interaction <span><span style="font-family: brush script mt italic;">U</span>(<span style="font-style: italic;">ω</span>)</span>. We propose a Green's function ansatz for the Anderson impurity problem with retarded interactions, in which the Green's function factori...</p><br/>[Phys. Rev. B 85, 035115] Published Wed Jan 18, 2012 Author(s): Michele Casula, Alexey Rubtsov, and Silke Biermann

Dynamical screening of the Coulomb interactions in correlated electron systems results in a low-energy effective problem with a dynamical Hubbard interaction U(ω). We propose a Green's function ansatz for the Anderson impurity problem with retarded interactions, in which the Green's function factori...

[Phys. Rev. B 85, 035115] Published Wed Jan 18, 2012

]]> Dynamical screening effects in correlated materials: Plasmon satellites and spectral weight transfers from a Green's function ansatz to extended dynamical mean field theory Michele Casula, Alexey Rubtsov, and Silke Biermann 2012-01-18T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.035115 Phys. Rev. B 85, 035115 (2012) article Physical Review B 85 3 2012-01-18T10:00:00-05:00 10.1103/PhysRevB.85.035115 http://link.aps.org/doi/10.1103/PhysRevB.85.035115 035115 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Nonactivated transport of ultradilute two-dimensional hole systems in GaAs field-effect transistors: Interaction versus disorder http://link.aps.org/doi/10.1103/PhysRevB.85.041304 Author(s): Jian Huang, L. N. Pfeiffer, and K. W. West<br/><p>Very strongly interacting high-purity two-dimensional (2D) electron systems at temperatures <span><span style="font-style: italic;">T</span>→0</span> demonstrate certain nonactivated insulating behaviors that are absent in more disordered systems. By measuring in dark the <span><span style="font-style: italic;">T</span></span> dependence of the conductivity of ultrahigh-quality 2D holes with charge densit...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. B 85, 041304] Published Tue Jan 17, 2012 Author(s): Jian Huang, L. N. Pfeiffer, and K. W. West

Rapid Communication Very strongly interacting high-purity two-dimensional (2D) electron systems at temperatures T→0 demonstrate certain nonactivated insulating behaviors that are absent in more disordered systems. By measuring in dark the T dependence of the conductivity of ultrahigh-quality 2D holes with charge densit...

[Phys. Rev. B 85, 041304] Published Tue Jan 17, 2012

]]> Nonactivated transport of ultradilute two-dimensional hole systems in GaAs field-effect transistors: Interaction versus disorder Jian Huang, L. N. Pfeiffer, and K. W. West 2012-01-17T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.041304 Phys. Rev. B 85, 041304 (2012) article Physical Review B 85 4 2012-01-17T10:00:00-05:00 10.1103/PhysRevB.85.041304 http://link.aps.org/doi/10.1103/PhysRevB.85.041304 041304 Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics Experimental and Theoretical Evidence for Pressure-Induced Metallization in FeO with Rocksalt-Type Structure http://link.aps.org/doi/10.1103/PhysRevLett.108.026403 Author(s): Kenji Ohta, R. E. Cohen, Kei Hirose, Kristjan Haule, Katsuya Shimizu, and Yasuo Ohishi<br/><p>Electrical conductivity of FeO was measured up to 141 GPa and 2480 K in a laser-heated diamond-anvil cell. The results show that rock-salt (B1) type structured FeO metallizes at around 70 GPa and 1900 K without any structural phase transition. We computed fully self-consistently the electronic struc...</p><br/><img src="http://publish.aps.org/images/icons/physics_viewpoint.gif" alt="Selected for a Synopsis in Physics"/> <br/>[Phys. Rev. Lett. 108, 026403] Published Thu Jan 12, 2012 Author(s): Kenji Ohta, R. E. Cohen, Kei Hirose, Kristjan Haule, Katsuya Shimizu, and Yasuo Ohishi

Selected for a Synopsis in Physics Electrical conductivity of FeO was measured up to 141 GPa and 2480 K in a laser-heated diamond-anvil cell. The results show that rock-salt (B1) type structured FeO metallizes at around 70 GPa and 1900 K without any structural phase transition. We computed fully self-consistently the electronic struc...

[Phys. Rev. Lett. 108, 026403] Published Thu Jan 12, 2012

]]> Experimental and Theoretical Evidence for Pressure-Induced Metallization in FeO with Rocksalt-Type Structure Kenji Ohta, R. E. Cohen, Kei Hirose, Kristjan Haule, Katsuya Shimizu, and Yasuo Ohishi 2012-01-12T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevLett.108.026403 Phys. Rev. Lett. 108, 026403 (2012) article Physical Review Letters 108 2 2012-01-12T10:00:00-05:00 10.1103/PhysRevLett.108.026403 http://link.aps.org/doi/10.1103/PhysRevLett.108.026403 026403 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Pressure-induced metal-insulator and spin-state transition in low-valence layered nickelates http://link.aps.org/doi/10.1103/PhysRevB.85.045111 Author(s): Victor Pardo and Warren E. Pickett<br/><p><span style="font-style: italic;">Ab initio</span> calculations predict a metal-insulator transition at zero temperature to occur in La<span><sub>4</sub></span>Ni<span><sub>3</sub></span>O<span><sub>8</sub></span> at moderate pressures as a result of a pressure-induced spin-state transition. The spin-state transition that is seen at 105 K at ambient pressure, from a low-temperature high-spin state to a high-te...</p><br/>[Phys. Rev. B 85, 045111] Published Thu Jan 12, 2012 Author(s): Victor Pardo and Warren E. Pickett

Ab initio calculations predict a metal-insulator transition at zero temperature to occur in La4Ni3O8 at moderate pressures as a result of a pressure-induced spin-state transition. The spin-state transition that is seen at 105 K at ambient pressure, from a low-temperature high-spin state to a high-te...

[Phys. Rev. B 85, 045111] Published Thu Jan 12, 2012

]]> Pressure-induced metal-insulator and spin-state transition in low-valence layered nickelates Victor Pardo and Warren E. Pickett 2012-01-12T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.045111 Phys. Rev. B 85, 045111 (2012) article Physical Review B 85 4 2012-01-12T10:00:00-05:00 10.1103/PhysRevB.85.045111 http://link.aps.org/doi/10.1103/PhysRevB.85.045111 045111 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Monoclinic M_{1} phase of VO_{2}: Mott-Hubbard versus band insulator http://link.aps.org/doi/10.1103/PhysRevB.85.045109 Author(s): A. S. Belozerov, M. A. Korotin, V. I. Anisimov, and A. I. Poteryaev<br/><p>We revisit the problem of the insulating ground state of the monoclinic <span><span style="font-style: italic;">M</span><sub>1</sub></span> phase in vanadium dioxide and argue that essential intersite correlation effects within vanadium dimers can be captured by the static mean-field approximation. We propose the LDA + DMFT +<span><span style="font-style: italic;">V</span></span> approach, which combines the density...</p><br/>[Phys. Rev. B 85, 045109] Published Thu Jan 12, 2012 Author(s): A. S. Belozerov, M. A. Korotin, V. I. Anisimov, and A. I. Poteryaev

We revisit the problem of the insulating ground state of the monoclinic M1 phase in vanadium dioxide and argue that essential intersite correlation effects within vanadium dimers can be captured by the static mean-field approximation. We propose the LDA + DMFT +V approach, which combines the density...

[Phys. Rev. B 85, 045109] Published Thu Jan 12, 2012

]]> Monoclinic M_{1} phase of VO_{2}: Mott-Hubbard versus band insulator A. S. Belozerov, M. A. Korotin, V. I. Anisimov, and A. I. Poteryaev 2012-01-12T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.045109 Phys. Rev. B 85, 045109 (2012) article Physical Review B 85 4 2012-01-12T10:00:00-05:00 10.1103/PhysRevB.85.045109 http://link.aps.org/doi/10.1103/PhysRevB.85.045109 045109 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems First-order metal-to-metal phase transition and non-Fermi-liquid behavior in a two-dimensional Mott insulating layer adsorbed on a metal substrate http://link.aps.org/doi/10.1103/PhysRevB.85.045112 Author(s): H. Ishida and A. Liebsch<br/><p>The electronic structure of a two-dimensional Mott insulating layer in contact with a semi-infinite metal substrate is studied within cluster dynamical mean field theory. For this purpose, the overlayer forming a square lattice is divided into an array of (<span>2×2</span>)-site clusters in which interatomic ele...</p><br/>[Phys. Rev. B 85, 045112] Published Thu Jan 12, 2012 Author(s): H. Ishida and A. Liebsch

The electronic structure of a two-dimensional Mott insulating layer in contact with a semi-infinite metal substrate is studied within cluster dynamical mean field theory. For this purpose, the overlayer forming a square lattice is divided into an array of (2×2)-site clusters in which interatomic ele...

[Phys. Rev. B 85, 045112] Published Thu Jan 12, 2012

]]> First-order metal-to-metal phase transition and non-Fermi-liquid behavior in a two-dimensional Mott insulating layer adsorbed on a metal substrate H. Ishida and A. Liebsch 2012-01-12T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.045112 Phys. Rev. B 85, 045112 (2012) article Physical Review B 85 4 2012-01-12T10:00:00-05:00 10.1103/PhysRevB.85.045112 http://link.aps.org/doi/10.1103/PhysRevB.85.045112 045112 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Insulator-to-Metal Transition in Selenium-Hyperdoped Silicon: Observation and Origin http://link.aps.org/doi/10.1103/PhysRevLett.108.026401 Author(s): Elif Ertekin, Mark T. Winkler, Daniel Recht, Aurore J. Said, Michael J. Aziz, Tonio Buonassisi, and Jeffrey C. Grossman<br/><p>Hyperdoping has emerged as a promising method for designing semiconductors with unique optical and electronic properties, although such properties currently lack a clear microscopic explanation. Combining computational and experimental evidence, we probe the origin of sub–band-gap optical absorption...</p><br/>[Phys. Rev. Lett. 108, 026401] Published Wed Jan 11, 2012 Author(s): Elif Ertekin, Mark T. Winkler, Daniel Recht, Aurore J. Said, Michael J. Aziz, Tonio Buonassisi, and Jeffrey C. Grossman

Hyperdoping has emerged as a promising method for designing semiconductors with unique optical and electronic properties, although such properties currently lack a clear microscopic explanation. Combining computational and experimental evidence, we probe the origin of sub–band-gap optical absorption...

[Phys. Rev. Lett. 108, 026401] Published Wed Jan 11, 2012

]]> Insulator-to-Metal Transition in Selenium-Hyperdoped Silicon: Observation and Origin Elif Ertekin, Mark T. Winkler, Daniel Recht, Aurore J. Said, Michael J. Aziz, Tonio Buonassisi, and Jeffrey C. Grossman 2012-01-11T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevLett.108.026401 Phys. Rev. Lett. 108, 026401 (2012) article Physical Review Letters 108 2 2012-01-11T10:00:00-05:00 10.1103/PhysRevLett.108.026401 http://link.aps.org/doi/10.1103/PhysRevLett.108.026401 026401 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Orbital, charge, and spin couplings in Ru_{2}^{5+}O_{9} dimers of Ba_{3}CoRu_{2}O_{9} http://link.aps.org/doi/10.1103/PhysRevB.85.041201 Author(s): H. D. Zhou, A. Kiswandhi, Y. Barlas, J. S. Brooks, T. Siegrist, G. Li, L. Balicas, J. G. Cheng, and F. Rivadulla<br/><p>The magnetic, transport, and structural properties of cold-pressed Ba<span><sub>3</sub></span>CoRu<span><sub>2</sub></span>O<span><sub>9</sub></span> show (i) an antiferromagnetic transition, (ii) a semiconductor-semiconductor electronic transition where the resistivity is dominated by the electron hopping between the Ru<span><sub>2</sub><sup>5+</sup></span>O<span><sub>9</sub></span> dimers with itinerant Ru electrons at high t...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. B 85, 041201] Published Mon Jan 09, 2012 Author(s): H. D. Zhou, A. Kiswandhi, Y. Barlas, J. S. Brooks, T. Siegrist, G. Li, L. Balicas, J. G. Cheng, and F. Rivadulla

Rapid Communication The magnetic, transport, and structural properties of cold-pressed Ba3CoRu2O9 show (i) an antiferromagnetic transition, (ii) a semiconductor-semiconductor electronic transition where the resistivity is dominated by the electron hopping between the Ru25+O9 dimers with itinerant Ru electrons at high t...

[Phys. Rev. B 85, 041201] Published Mon Jan 09, 2012

]]> Orbital, charge, and spin couplings in Ru_{2}^{5+}O_{9} dimers of Ba_{3}CoRu_{2}O_{9} H. D. Zhou, A. Kiswandhi, Y. Barlas, J. S. Brooks, T. Siegrist, G. Li, L. Balicas, J. G. Cheng, and F. Rivadulla 2012-01-09T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.041201 Phys. Rev. B 85, 041201 (2012) article Physical Review B 85 4 2012-01-09T10:00:00-05:00 10.1103/PhysRevB.85.041201 http://link.aps.org/doi/10.1103/PhysRevB.85.041201 041201 Semiconductors I: bulk Semiconductors I: bulk Exact localized eigenstates for an extended Bose-Hubbard model with pair-correlated hopping http://link.aps.org/doi/10.1103/PhysRevA.85.011603 Author(s): Peter Jason and Magnus Johansson<br/><p>We show that a Bose-Hubbard model extended with pair-correlated hopping has exact eigenstates, <span style="font-style: italic;">quantum lattice compactons</span>, with complete single-site localization. These appear at parameter values where the one-particle tunneling is exactly canceled by nonlocal pair correlations, and correspond in a ...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. A 85, 011603] Published Thu Jan 05, 2012 Author(s): Peter Jason and Magnus Johansson

Rapid Communication We show that a Bose-Hubbard model extended with pair-correlated hopping has exact eigenstates, quantum lattice compactons, with complete single-site localization. These appear at parameter values where the one-particle tunneling is exactly canceled by nonlocal pair correlations, and correspond in a ...

[Phys. Rev. A 85, 011603] Published Thu Jan 05, 2012

]]> Exact localized eigenstates for an extended Bose-Hubbard model with pair-correlated hopping Peter Jason and Magnus Johansson 2012-01-05T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.011603 Phys. Rev. A 85, 011603 (2012) article Physical Review A 85 1 2012-01-05T10:00:00-05:00 10.1103/PhysRevA.85.011603 http://link.aps.org/doi/10.1103/PhysRevA.85.011603 011603 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Enhancement of the Critical Temperature of Superconductors by Anderson Localization http://link.aps.org/doi/10.1103/PhysRevLett.108.017002 Author(s): I. S. Burmistrov, I. V. Gornyi, and A. D. Mirlin<br/><p>The influence of disorder on the temperature of superconducting transition (<span><span style="font-style: italic;">T</span><sub><span style="font-style: italic;">c</span></sub></span>) is studied within the <span><span style="font-style: italic;">σ</span></span>-model renormalization-group framework. Electron-electron interaction in particle-hole and Cooper channels is taken into account and assumed to be short range. Two-dimensional systems in the weak l...</p><br/>[Phys. Rev. Lett. 108, 017002] Published Thu Jan 05, 2012 Author(s): I. S. Burmistrov, I. V. Gornyi, and A. D. Mirlin

The influence of disorder on the temperature of superconducting transition (Tc) is studied within the σ-model renormalization-group framework. Electron-electron interaction in particle-hole and Cooper channels is taken into account and assumed to be short range. Two-dimensional systems in the weak l...

[Phys. Rev. Lett. 108, 017002] Published Thu Jan 05, 2012

]]> Enhancement of the Critical Temperature of Superconductors by Anderson Localization I. S. Burmistrov, I. V. Gornyi, and A. D. Mirlin 2012-01-05T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevLett.108.017002 Phys. Rev. Lett. 108, 017002 (2012) article Physical Review Letters 108 1 2012-01-05T10:00:00-05:00 10.1103/PhysRevLett.108.017002 http://link.aps.org/doi/10.1103/PhysRevLett.108.017002 017002 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Stability of Ni sites across the pressure-induced insulator-to-metal transition in YNiO_{3} http://link.aps.org/doi/10.1103/PhysRevB.85.045102 Author(s): Aline Y. Ramos, Cinthia Piamonteze, Hélio C. N. Tolentino, Narcizo M. Souza-Neto, Oana Bunau, Yves Joly, Stéphane Grenier, Jean-Paul Itié, Néstor E. Massa, José A. Alonso, and Maria J. Martinez-Lope<br/><p>The local environment of nickel atoms in <span>YNiO<sub>3</sub></span> across the pressure-induced insulator-to-metal (IM) transition was studied using x-ray absorption spectroscopy (XAS) supported by <span style="font-style: italic;">ab initio</span> calculations. The monotonic contraction of the <span>NiO<sub>6</sub></span> units under applied pressure observed up to 13 GPa stops in a...</p><br/>[Phys. Rev. B 85, 045102] Published Wed Jan 04, 2012 Author(s): Aline Y. Ramos, Cinthia Piamonteze, Hélio C. N. Tolentino, Narcizo M. Souza-Neto, Oana Bunau, Yves Joly, Stéphane Grenier, Jean-Paul Itié, Néstor E. Massa, José A. Alonso, and Maria J. Martinez-Lope

The local environment of nickel atoms in YNiO3 across the pressure-induced insulator-to-metal (IM) transition was studied using x-ray absorption spectroscopy (XAS) supported by ab initio calculations. The monotonic contraction of the NiO6 units under applied pressure observed up to 13 GPa stops in a...

[Phys. Rev. B 85, 045102] Published Wed Jan 04, 2012

]]> Stability of Ni sites across the pressure-induced insulator-to-metal transition in YNiO_{3} Aline Y. Ramos, Cinthia Piamonteze, Hélio C. N. Tolentino, Narcizo M. Souza-Neto, Oana Bunau, Yves Joly, Stéphane Grenier, Jean-Paul Itié, Néstor E. Massa, José A. Alonso, and Maria J. Martinez-Lope 2012-01-04T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.045102 Phys. Rev. B 85, 045102 (2012) article Physical Review B 85 4 2012-01-04T10:00:00-05:00 10.1103/PhysRevB.85.045102 http://link.aps.org/doi/10.1103/PhysRevB.85.045102 045102 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Quantum criticality of a Bose gas in an optical lattice near the Mott transition http://link.aps.org/doi/10.1103/PhysRevA.85.011602 Author(s): A. Rançon and N. Dupuis<br/><p>We derive the equation of state of bosons in an optical lattice in the framework of the Bose-Hubbard model. Near the density-driven Mott transition, the expression of the pressure <span><span style="font-style: italic;">P</span>(<span style="font-style: italic;">μ</span>,<span style="font-style: italic;">T</span>)</span> versus chemical potential and temperature is similar to that of a dilute Bose gas but with renormalized mass <span><span style="font-style: italic;">m</span><sup>*</sup></span> a...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. A 85, 011602] Published Wed Jan 04, 2012 Author(s): A. Rançon and N. Dupuis

Rapid Communication We derive the equation of state of bosons in an optical lattice in the framework of the Bose-Hubbard model. Near the density-driven Mott transition, the expression of the pressure P(μ,T) versus chemical potential and temperature is similar to that of a dilute Bose gas but with renormalized mass m* a...

[Phys. Rev. A 85, 011602] Published Wed Jan 04, 2012

]]> Quantum criticality of a Bose gas in an optical lattice near the Mott transition A. Rançon and N. Dupuis 2012-01-04T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.011602 Phys. Rev. A 85, 011602 (2012) article Physical Review A 85 1 2012-01-04T10:00:00-05:00 10.1103/PhysRevA.85.011602 http://link.aps.org/doi/10.1103/PhysRevA.85.011602 011602 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Insulator-metal transition driven by change of doping and spin-orbit interaction in Sr_{2}IrO_{4} http://link.aps.org/doi/10.1103/PhysRevB.85.035101 Author(s): J. S. Lee, Y. Krockenberger, K. S. Takahashi, M. Kawasaki, and Y. Tokura<br/><p>We have investigated the insulator-metal transition (IMT) of the 5<span><span style="font-style: italic;">d</span></span> system Sr<span><sub>2</sub></span>IrO<span><sub>4</sub></span> by optical spectroscopy. Change of the band filling as well as tuning of the spin-orbit interaction (SOI) strength has been realized in single crystalline thin films with continuous cation substitutions. Upon the IMT,...</p><br/>[Phys. Rev. B 85, 035101] Published Wed Jan 04, 2012 Author(s): J. S. Lee, Y. Krockenberger, K. S. Takahashi, M. Kawasaki, and Y. Tokura

We have investigated the insulator-metal transition (IMT) of the 5d system Sr2IrO4 by optical spectroscopy. Change of the band filling as well as tuning of the spin-orbit interaction (SOI) strength has been realized in single crystalline thin films with continuous cation substitutions. Upon the IMT,...

[Phys. Rev. B 85, 035101] Published Wed Jan 04, 2012

]]> Insulator-metal transition driven by change of doping and spin-orbit interaction in Sr_{2}IrO_{4} J. S. Lee, Y. Krockenberger, K. S. Takahashi, M. Kawasaki, and Y. Tokura 2012-01-04T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.035101 Phys. Rev. B 85, 035101 (2012) article Physical Review B 85 3 2012-01-04T10:00:00-05:00 10.1103/PhysRevB.85.035101 http://link.aps.org/doi/10.1103/PhysRevB.85.035101 035101 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems Mott transition of fermionic mixtures with mass imbalance in optical lattices http://link.aps.org/doi/10.1103/PhysRevA.85.013606 Author(s): Tung-Lam Dao, Michel Ferrero, Pablo S. Cornaglia, and Massimo Capone<br/><p>We investigate the effect of mass imbalance in binary Fermi mixtures loaded in optical lattices. Using dynamical mean-field theory, we study the transition from a fluid to a Mott insulator driven by the repulsive interactions. For almost every value of the parameters we find that the light species w...</p><br/>[Phys. Rev. A 85, 013606] Published Wed Jan 04, 2012 Author(s): Tung-Lam Dao, Michel Ferrero, Pablo S. Cornaglia, and Massimo Capone

We investigate the effect of mass imbalance in binary Fermi mixtures loaded in optical lattices. Using dynamical mean-field theory, we study the transition from a fluid to a Mott insulator driven by the repulsive interactions. For almost every value of the parameters we find that the light species w...

[Phys. Rev. A 85, 013606] Published Wed Jan 04, 2012

]]> Mott transition of fermionic mixtures with mass imbalance in optical lattices Tung-Lam Dao, Michel Ferrero, Pablo S. Cornaglia, and Massimo Capone 2012-01-04T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013606 Phys. Rev. A 85, 013606 (2012) article Physical Review A 85 1 2012-01-04T10:00:00-05:00 10.1103/PhysRevA.85.013606 http://link.aps.org/doi/10.1103/PhysRevA.85.013606 013606 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Linearized auxiliary fields Monte Carlo technique: Efficient sampling of the fermion sign http://link.aps.org/doi/10.1103/PhysRevB.84.241110 Author(s): Sandro Sorella<br/><p>We introduce a method that combines the power of both the lattice Green' function Monte Carlo (LGFMC) with the auxiliary field quantum Monte Carlo (AFQMC) techniques, and allows us to compute <span style="font-style: italic;">exact</span> ground-state properties of the Hubbard model for <span><span style="font-style: italic;">U</span>≲4<span style="font-style: italic;">t</span></span> on finite clusters. Thanks to LGFMC, one obtains...</p><br/><img src="http://publish.aps.org/images/icons/prbsugg30x30.jpg" alt="PRB Editors' Suggestion"/> <img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. B 84, 241110] Published Thu Dec 29, 2011 Author(s): Sandro Sorella

PRB Editors' Suggestion Rapid Communication We introduce a method that combines the power of both the lattice Green' function Monte Carlo (LGFMC) with the auxiliary field quantum Monte Carlo (AFQMC) techniques, and allows us to compute exact ground-state properties of the Hubbard model for U≲4t on finite clusters. Thanks to LGFMC, one obtains...

[Phys. Rev. B 84, 241110] Published Thu Dec 29, 2011

]]> Linearized auxiliary fields Monte Carlo technique: Efficient sampling of the fermion sign Sandro Sorella 2011-12-29T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.84.241110 Phys. Rev. B 84, 241110 (2011) article Physical Review B 84 24 2011-12-29T10:00:00-05:00 10.1103/PhysRevB.84.241110 http://link.aps.org/doi/10.1103/PhysRevB.84.241110 241110 Electronic structure and strongly correlated systems Electronic structure and strongly correlated systems