PRL: Condensed Matter: Electronic Properties, etc. http://prl.aps.org/ Recently published articles in Phys. Rev. Lett. in the Table of Content section "Condensed Matter: Electronic Properties, etc." en-us Copyright (c) 2009 The American Physical Society 2009-11-05T23:48:49-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-05T23:48:49-05:00 rss@aps.org Molecular Dynamics Study of Dielectric Response in a Relaxor Ferroelectric http://link.aps.org/doi/10.1103/PhysRevLett.103.197601 Author(s): Ilya Grinberg, Young-Han Shin, and Andrew M. Rappe<br/>We use atomistic molecular dynamics simulations to study relaxor behavior in the 0.75PbMg_{1/3} Nb_{2/3} O_{3} -0.25PbTiO_{3} material. Even for a fairly small simulation size of 1000 atoms, the system exhibits frequency dispersion and deviation from the Curie-Weiss law typical of relaxor materials....<br/>[Phys. Rev. Lett. 103, 197601] Published Thu Nov 05, 2009 Ilya Grinberg, Young-Han Shin, and Andrew M. Rappe 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197601 Phys. Rev. Lett. 103, 197601 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 197601 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Direct Observation of the Critical Relaxation of Polarization Clusters in BaTiO_{3} Using a Pulsed X-Ray Laser Technique http://link.aps.org/doi/10.1103/PhysRevLett.103.197401 Author(s): K. Namikawa, M. Kishimoto, K. Nasu, E. Matsushita, R. Z. Tai, K. Sukegawa, H. Yamatani, H. Hasegawa, M. Nishikino, M. Tanaka, and K. Nagashima<br/>We have developed a new method to investigate the relaxation time of the dipole moment in polarization clusters in BaTiO_{3} . Time correlation of speckle intensities was measured by the use of a double pulsed soft x-ray laser. The evolution of the relaxation time of the dipole moment near the Curie...<br/>[Phys. Rev. Lett. 103, 197401] Published Thu Nov 05, 2009 K. Namikawa, M. Kishimoto, K. Nasu, E. Matsushita, R. Z. Tai, K. Sukegawa, H. Yamatani, H. Hasegawa, M. Nishikino, M. Tanaka, and K. Nagashima 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197401 Phys. Rev. Lett. 103, 197401 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 197401 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Magnetic Excitations in the Kondo Liquid: Superconductivity and Hidden Magnetic Quantum Critical Fluctuations http://link.aps.org/doi/10.1103/PhysRevLett.103.197004 Author(s): Yi-feng Yang, Ricardo Urbano, Nicholas J. Curro, David Pines, and E. D. Bauer<br/>We report Knight-shift experiments on the superconducting heavy-electron material CeCoIn_{5} that allow one to track with some precision the behavior of the heavy-electron Kondo liquid in the superconducting state with results in agreement with BCS theory. An analysis of the ^{115} In nuclear quadru...<br/>[Phys. Rev. Lett. 103, 197004] Published Thu Nov 05, 2009 Yi-feng Yang, Ricardo Urbano, Nicholas J. Curro, David Pines, and E. D. Bauer 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197004 Phys. Rev. Lett. 103, 197004 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 197004 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Proximity-Induced Pseudogap: Evidence for Preformed Pairs http://link.aps.org/doi/10.1103/PhysRevLett.103.197003 Author(s): Ofer Yuli, Itay Asulin, Yoav Kalcheim, Gad Koren, and Oded Millo<br/>The temperature evolution of the proximity effect in Au/La_{2-x} Sr_{x} CuO_{4} and La_{1.55} Sr_{0.45} CuO_{4} /La_{2-x} Sr_{x} CuO_{4} bilayers was investigated using scanning tunneling microscopy. Proximity-induced gaps, centered at the chemical potential, were found to persist above the supercon...<br/>[Phys. Rev. Lett. 103, 197003] Published Thu Nov 05, 2009 Ofer Yuli, Itay Asulin, Yoav Kalcheim, Gad Koren, and Oded Millo 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197003 Phys. Rev. Lett. 103, 197003 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 197003 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Surface States of Topological Insulators: The Dirac Fermion in Curved Two-Dimensional Spaces http://link.aps.org/doi/10.1103/PhysRevLett.103.196804 Author(s): Dung-Hai Lee<br/>The surface of a topological insulator is a closed two-dimensional manifold. The surface states are described by the Dirac Hamiltonian in curved two-dimensional spaces. For a slablike sample with a magnetic field perpendicular to its top and bottom surfaces, there are chiral states delocalized on th...<br/>[Phys. Rev. Lett. 103, 196804] Published Thu Nov 05, 2009 Dung-Hai Lee 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.196804 Phys. Rev. Lett. 103, 196804 text/html article Physical Review Letters 103 19 2009-11-05T00:00:00-05:00 196804 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Quasiparticles of Spatially Anisotropic Triangular Antiferromagnets in a Magnetic Field http://link.aps.org/doi/10.1103/PhysRevLett.103.197203 Author(s): Masanori Kohno<br/>The spectral properties of the spin-1/2 Heisenberg antiferromagnet on an anisotropic triangular lattice in a magnetic field are investigated using a weak-interchain-coupling approach combined with exact solutions of a chain. Dominant modes induced by interchain interactions in a magnetic field behav...<br/>[Phys. Rev. Lett. 103, 197203] Published Wed Nov 04, 2009 Masanori Kohno 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197203 Phys. Rev. Lett. 103, 197203 text/html article Physical Review Letters 103 19 2009-11-04T00:00:00-05:00 197203 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Evidence for Complex Superconducting Order Parameter Symmetry in the Low-Temperature Phase of UPt_{3} from Josephson Interferometry http://link.aps.org/doi/10.1103/PhysRevLett.103.197002 Author(s): J. D. Strand, D. J. Van Harlingen, J. B. Kycia, and W. P. Halperin<br/>We present data on the modulation of the critical current with applied magnetic field in UPt_{3} –Cu–Pb Josephson junctions and SQUIDs. The junctions were fabricated on polished surfaces of UPt_{3} single crystals. The shape of the resulting diffraction patterns provides phase-sensitive informat...<br/>[Phys. Rev. Lett. 103, 197002] Published Wed Nov 04, 2009 J. D. Strand, D. J. Van Harlingen, J. B. Kycia, and W. P. Halperin 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197002 Phys. Rev. Lett. 103, 197002 text/html article Physical Review Letters 103 19 2009-11-04T00:00:00-05:00 197002 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Fractional Topological Insulators http://link.aps.org/doi/10.1103/PhysRevLett.103.196803 Author(s): Michael Levin and Ady Stern<br/>We analyze generalizations of two-dimensional topological insulators which can be realized in interacting, time reversal invariant electron systems. These states, which we call fractional topological insulators, contain excitations with fractional charge and statistics in addition to protected edge ...<br/>[Phys. Rev. Lett. 103, 196803] Published Wed Nov 04, 2009 Michael Levin and Ady Stern 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.196803 Phys. Rev. Lett. 103, 196803 text/html article Physical Review Letters 103 19 2009-11-04T00:00:00-05:00 196803 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Observation of the Underscreened Kondo Effect in a Molecular Transistor http://link.aps.org/doi/10.1103/PhysRevLett.103.197202 Author(s): Nicolas Roch, Serge Florens, Theo A. Costi, Wolfgang Wernsdorfer, and Franck Balestro<br/>We present the first quantitative experimental evidence for the underscreened Kondo effect, an incomplete compensation of a quantized magnetic moment by conduction electrons, as originally proposed by Nozières and Blandin. The device consists of an even charge spin S=1 molecular quantum dot, obtain...<br/>[Phys. Rev. Lett. 103, 197202] Published Tue Nov 03, 2009 Nicolas Roch, Serge Florens, Theo A. Costi, Wolfgang Wernsdorfer, and Franck Balestro 2009-11-03T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197202 Phys. Rev. Lett. 103, 197202 text/html article Physical Review Letters 103 19 2009-11-03T00:00:00-05:00 197202 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Localization of Metal-Induced Gap States at the Metal-Insulator Interface: Origin of Flux Noise in SQUIDs and Superconducting Qubits http://link.aps.org/doi/10.1103/PhysRevLett.103.197001 Author(s): SangKook Choi, Dung-Hai Lee, Steven G. Louie, and John Clarke<br/>The origin of magnetic flux noise in superconducting quantum interference devices with a power spectrum scaling as 1/f (f is frequency) has been a puzzle for over 20 years. This noise limits the decoherence time of superconducting qubits. A consensus has emerged that the noise arises from fluctuati...<br/>[Phys. Rev. Lett. 103, 197001] Published Tue Nov 03, 2009 SangKook Choi, Dung-Hai Lee, Steven G. Louie, and John Clarke 2009-11-03T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197001 Phys. Rev. Lett. 103, 197001 text/html article Physical Review Letters 103 19 2009-11-03T00:00:00-05:00 197001 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Rounding of First Order Transitions in Low-Dimensional Quantum Systems with Quenched Disorder http://link.aps.org/doi/10.1103/PhysRevLett.103.197201 Author(s): Rafael L. Greenblatt, Michael Aizenman, and Joel L. Lebowitz<br/>We prove that the addition of an arbitrarily small random perturbation to a quantum spin system rounds a first-order phase transition in the conjugate order parameter in d≤2 dimensions, or for cases involving the breaking of a continuous symmetry in d≤4. This establishes rigorously for quantum s...<br/>[Phys. Rev. Lett. 103, 197201] Published Mon Nov 02, 2009 Rafael L. Greenblatt, Michael Aizenman, and Joel L. Lebowitz 2009-11-02T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.197201 Phys. Rev. Lett. 103, 197201 text/html article Physical Review Letters 103 19 2009-11-02T00:00:00-05:00 197201 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Bilayer Graphene Interferometry: Phase Jump and Wave Collimation http://link.aps.org/doi/10.1103/PhysRevLett.103.196802 Author(s): Sunghun Park and H.-S. Sim<br/>We theoretically study the phase of the reflection amplitude of an electron (massive Dirac fermion) at a lateral potential step in Bernal-stacked bilayer graphene. The phase shows an anomalous jump of Ï€, as the electron incidence angle (relative to the normal direction to the step) varies to pass Â...<br/>[Phys. Rev. Lett. 103, 196802] Published Mon Nov 02, 2009 Sunghun Park and H.-S. Sim 2009-11-02T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.196802 Phys. Rev. Lett. 103, 196802 text/html article Physical Review Letters 103 19 2009-11-02T00:00:00-05:00 196802 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Temperature Dependence of the Conductivity of Ballistic Graphene http://link.aps.org/doi/10.1103/PhysRevLett.103.196801 Author(s): Markus Müller, Matthias Bräuninger, and Björn Trauzettel<br/>We investigate the temperature dependence of conductivity in ballistic graphene using Landauer transport theory. We obtain results which are qualitatively in agreement with many features recently observed in transport measurements on high mobility suspended graphene. The conductivity σ at high temp...<br/>[Phys. Rev. Lett. 103, 196801] Published Mon Nov 02, 2009 Markus Müller, Matthias Bräuninger, and Björn Trauzettel 2009-11-02T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.196801 Phys. Rev. Lett. 103, 196801 text/html article Physical Review Letters 103 19 2009-11-02T00:00:00-05:00 196801 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Spin Hall Drag in Electronic Bilayers http://link.aps.org/doi/10.1103/PhysRevLett.103.196601 Author(s): S. M. Badalyan and G. Vignale<br/>We predict a new effect in electronic bilayers: spin Hall drag. The effect consists of the generation of spin accumulation across one layer by an electric current along the other layer. It arises from the combined action of spin-orbit and Coulomb interactions. Our theoretical analysis, based on the ...<br/>[Phys. Rev. Lett. 103, 196601] Published Mon Nov 02, 2009 S. M. Badalyan and G. Vignale 2009-11-02T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.196601 Phys. Rev. Lett. 103, 196601 text/html article Physical Review Letters 103 19 2009-11-02T00:00:00-05:00 196601 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Magnetoelectric Effect in Graphene Nanoribbons on Substrates via Electric Bias Control of Exchange Splitting http://link.aps.org/doi/10.1103/PhysRevLett.103.187204 Author(s): Zhuhua Zhang, Changfeng Chen, and Wanlin Guo<br/>We predict a magnetoelectric (ME) effect in graphene nanoribbons on silicon substrates by first-principles calculations. It is shown that a bias voltage can produce strong linear ME effect by driving charge transfer between the nanoribbons and substrate, thus tuning the exchange splitting of magneti...<br/>[Phys. Rev. Lett. 103, 187204] Published Fri Oct 30, 2009 Zhuhua Zhang, Changfeng Chen, and Wanlin Guo 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187204 Phys. Rev. Lett. 103, 187204 text/html article Physical Review Letters 103 18 2009-10-30T00:00:00-04:00 187204 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Luminescence of a Cooper Pair http://link.aps.org/doi/10.1103/PhysRevLett.103.187001 Author(s): Yasuhiro Asano, Ikuo Suemune, Hideaki Takayanagi, and Eiichi Hanamura<br/>This Letter theoretically discusses the photon emission spectra of a superconducting p-n junction. On the basis of the second order perturbation theory for electron-photon interaction, we show that the recombination of a Cooper pair with two p-type carriers causes enhancement of the luminescence in...<br/>[Phys. Rev. Lett. 103, 187001] Published Fri Oct 30, 2009 Yasuhiro Asano, Ikuo Suemune, Hideaki Takayanagi, and Eiichi Hanamura 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187001 Phys. Rev. Lett. 103, 187001 text/html article Physical Review Letters 103 18 2009-10-30T00:00:00-04:00 187001 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Swapping Spin Currents: Interchanging Spin and Flow Directions http://link.aps.org/doi/10.1103/PhysRevLett.103.186601 Author(s): Maria B. Lifshits and Michel I. Dyakonov<br/>We introduce a previously unknown spin-related transport phenomenon, consisting of a transformation (swapping) of spin currents, in which the spin direction and the direction of flow are interchanged. Swapping is due to the spin-orbit interaction in scattering. It originates from the correlation bet...<br/>[Phys. Rev. Lett. 103, 186601] Published Fri Oct 30, 2009 Maria B. Lifshits and Michel I. Dyakonov 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186601 Phys. Rev. Lett. 103, 186601 text/html article Physical Review Letters 103 18 2009-10-30T00:00:00-04:00 186601 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Tuning the Electron-Phonon Coupling in Multilayer Graphene with Magnetic Fields http://link.aps.org/doi/10.1103/PhysRevLett.103.186803 Author(s): C. Faugeras, M. Amado, P. Kossacki, M. Orlita, M. Sprinkle, C. Berger, W. A. de Heer, and M. Potemski<br/>Magneto-Raman scattering study of the E_{2g} optical phonons in multilayer epitaxial graphene grown on a carbon face of SiC is presented. At 4.2 K in magnetic field up to 33 T, we observe a series of well-pronounced avoided crossings each time the optically active inter-Landau level transition is ...<br/>[Phys. Rev. Lett. 103, 186803] Published Thu Oct 29, 2009 C. Faugeras, M. Amado, P. Kossacki, M. Orlita, M. Sprinkle, C. Berger, W. A. de Heer, and M. Potemski 2009-10-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186803 Phys. Rev. Lett. 103, 186803 text/html article Physical Review Letters 103 18 2009-10-29T00:00:00-04:00 186803 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Morphology-Dependent Carrier and Exciton Generations in Regioregular Poly(3-hexylthiophene) Polymer Diodes as Revealed by Bleaching Spectroscopy http://link.aps.org/doi/10.1103/PhysRevLett.103.187402 Author(s): Katsuichi Kanemoto, Motoaki Yasui, Daisuke Kosumi, Akihiko Ogata, Mitsuru Sugisaki, Tsutomu Karasawa, Ichiro Akai, and Hideki Hashimoto<br/>Bleaching probe spectroscopy performed for regioregular poly(3-hexylthiophene) diodes reveals that coexistent morphological phases determine the conducting and optical properties of conjugated polymer films. Photoinduced absorption measurements demonstrate that exciton migration occurs from lamella ...<br/>[Phys. Rev. Lett. 103, 187402] Published Wed Oct 28, 2009 Katsuichi Kanemoto, Motoaki Yasui, Daisuke Kosumi, Akihiko Ogata, Mitsuru Sugisaki, Tsutomu Karasawa, Ichiro Akai, and Hideki Hashimoto 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187402 Phys. Rev. Lett. 103, 187402 text/html article Physical Review Letters 103 18 2009-10-28T00:00:00-04:00 187402 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Fermionic Spin Excitations in Two- and Three-Dimensional Antiferromagnets http://link.aps.org/doi/10.1103/PhysRevLett.103.187203 Author(s): Zhihao Hao and Oleg Tchernyshyov<br/>Spin excitations in an ordered Heisenberg magnet are magnons—bosons with spin 1. That may change when frustration and quantum fluctuations suppress the order and restore the spin-rotation symmetry. We show that spin excitations in the S=1/2 Heisenberg antiferromagnet on a kagome lattice are spino...<br/>[Phys. Rev. Lett. 103, 187203] Published Wed Oct 28, 2009 Zhihao Hao and Oleg Tchernyshyov 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187203 Phys. Rev. Lett. 103, 187203 text/html article Physical Review Letters 103 18 2009-10-28T00:00:00-04:00 187203 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Novel Multiferroic State of Eu_{1-x} Y_{x} MnO_{3} in High Magnetic Fields http://link.aps.org/doi/10.1103/PhysRevLett.103.187202 Author(s): M. Tokunaga, Y. Yamasaki, Y. Onose, M. Mochizuki, N. Furukawa, and Y. Tokura<br/>Magnetic and dielectric properties of Eu_{1-x} Y_{x} MnO_{3} (x=0 and 0.4) are studied in pulsed magnetic fields up to 55 T. For x=0, application of magnetic fields higher than 20 T along the b axis causes magnetic transitions accompanied by generation of electric polarization (P) along the a axis...<br/>[Phys. Rev. Lett. 103, 187202] Published Wed Oct 28, 2009 M. Tokunaga, Y. Yamasaki, Y. Onose, M. Mochizuki, N. Furukawa, and Y. Tokura 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187202 Phys. Rev. Lett. 103, 187202 text/html article Physical Review Letters 103 18 2009-10-28T00:00:00-04:00 187202 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Excitonic Effects on the Optical Response of Graphene and Bilayer Graphene http://link.aps.org/doi/10.1103/PhysRevLett.103.186802 Author(s): Li Yang, Jack Deslippe, Cheol-Hwan Park, Marvin L. Cohen, and Steven G. Louie<br/>We present first-principles calculations of many-electron effects on the optical response of graphene, bilayer graphene, and graphite employing the GW-Bethe Salpeter equation approach. We find that resonant excitons are formed in these two-dimensional semimetals. The resonant excitons give rise to ...<br/>[Phys. Rev. Lett. 103, 186802] Published Wed Oct 28, 2009 Li Yang, Jack Deslippe, Cheol-Hwan Park, Marvin L. Cohen, and Steven G. Louie 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186802 Phys. Rev. Lett. 103, 186802 text/html article Physical Review Letters 103 18 2009-10-28T00:00:00-04:00 186802 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Exciton Doublet in the Mott-Hubbard Insulator LiCuVO_{4} Identified by Spectral Ellipsometry http://link.aps.org/doi/10.1103/PhysRevLett.103.187401 Author(s): Y. Matiks, P. Horsch, R. K. Kremer, B. Keimer, and A. V. Boris<br/>Spectroscopic ellipsometry was used to study the dielectric function of LiCuVO_{4} , a compound comprised of chains of edge-sharing CuO_{4} plaquettes, in the spectral range 0.75–6.5 eV at temperatures 7–300 K. For photon polarization along the chains, the data reveal a weak but well-resolved ...<br/>[Phys. Rev. Lett. 103, 187401] Published Tue Oct 27, 2009 Y. Matiks, P. Horsch, R. K. Kremer, B. Keimer, and A. V. Boris 2009-10-27T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187401 Phys. Rev. Lett. 103, 187401 text/html article Physical Review Letters 103 18 2009-10-27T00:00:00-04:00 187401 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Theory of Spin-Conserving Excitation of the N-V^{-} Center in Diamond http://link.aps.org/doi/10.1103/PhysRevLett.103.186404 Author(s): Adam Gali, Erik Janzén, Péter Deák, Georg Kresse, and Efthimios Kaxiras<br/>The negatively charged nitrogen-vacancy defect in diamond is an important atomic-scale structure that can be used as a qubit in quantum computing and as a marker in biomedical applications. Its usefulness relies on the ability to optically excite electrons between well-defined gap states, which requ...<br/>[Phys. Rev. Lett. 103, 186404] Published Tue Oct 27, 2009 Adam Gali, Erik Janzén, Péter Deák, Georg Kresse, and Efthimios Kaxiras 2009-10-27T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186404 Phys. Rev. Lett. 103, 186404 text/html article Physical Review Letters 103 18 2009-10-27T00:00:00-04:00 186404 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Co Dimers on Hexagonal Carbon Rings Proposed as Subnanometer Magnetic Storage Bits http://link.aps.org/doi/10.1103/PhysRevLett.103.187201 Author(s): Ruijuan Xiao, Daniel Fritsch, Michael D. Kuz’min, Klaus Koepernik, Helmut Eschrig, Manuel Richter, Knut Vietze, and Gotthard Seifert<br/>It is demonstrated by means of density functional and ab initio quantum chemical calculations, that transition-metal–carbon systems have the potential to enhance the presently available area density of magnetic recording by 3 orders of magnitude. As a model system, Co_{2} benzene with a diameter...<br/>[Phys. Rev. Lett. 103, 187201] Published Mon Oct 26, 2009 Ruijuan Xiao, Daniel Fritsch, Michael D. Kuz’min, Klaus Koepernik, Helmut Eschrig, Manuel Richter, Knut Vietze, and Gotthard Seifert 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.187201 Phys. Rev. Lett. 103, 187201 text/html article Physical Review Letters 103 18 2009-10-26T00:00:00-04:00 187201 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Giant Surface-Plasmon-Induced Drag Effect in Metal Nanowires http://link.aps.org/doi/10.1103/PhysRevLett.103.186801 Author(s): Maxim Durach, Anastasia Rusina, and Mark I. Stockman<br/>Here, for the first time we predict a giant surface-plasmon-induced drag-effect rectification (SPIDER), which exists under conditions of the extreme nanoplasmonic confinement. In nanowires, this giant SPIDER generates rectified THz potential differences up to 10 V and extremely strong electric fiel...<br/>[Phys. Rev. Lett. 103, 186801] Published Mon Oct 26, 2009 Maxim Durach, Anastasia Rusina, and Mark I. Stockman 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186801 Phys. Rev. Lett. 103, 186801 text/html article Physical Review Letters 103 18 2009-10-26T00:00:00-04:00 186801 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Exact Bosonization for an Interacting Fermi Gas in Arbitrary Dimensions http://link.aps.org/doi/10.1103/PhysRevLett.103.186403 Author(s): K. B. Efetov, C. Pépin, and H. Meier<br/>We present an exact mapping of models of interacting fermions onto boson models. The bosons correspond to collective excitations in the initial fermionic models. This bosonization is applicable in any dimension and for any interaction between fermions. Introducing superfields, we derive a field theo...<br/>[Phys. Rev. Lett. 103, 186403] Published Mon Oct 26, 2009 K. B. Efetov, C. Pépin, and H. Meier 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186403 Phys. Rev. Lett. 103, 186403 text/html article Physical Review Letters 103 18 2009-10-26T00:00:00-04:00 186403 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Nonmagnetic Impurity Resonances as a Signature of Sign-Reversal Pairing in FeAs-Based Superconductors http://link.aps.org/doi/10.1103/PhysRevLett.103.186402 Author(s): Degang Zhang<br/>The energy band structure of FeAs-based superconductors is fitted by a tight-binding model with two Fe ions per unit cell and two degenerate orbitals per Fe ion. Based on this, superconductivity with extended s-wave pairing symmetry of the form cos⁡k_{x} +cos⁡k_{y} is examined. The local density...<br/>[Phys. Rev. Lett. 103, 186402] Published Mon Oct 26, 2009 Degang Zhang 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186402 Phys. Rev. Lett. 103, 186402 text/html article Physical Review Letters 103 18 2009-10-26T00:00:00-04:00 186402 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Bipolaron in the t-J Model Coupled to Longitudinal and Transverse Quantum Lattice Vibrations http://link.aps.org/doi/10.1103/PhysRevLett.103.186401 Author(s): L. Vidmar, J. Bonča, S. Maekawa, and T. Tohyama<br/>We explore the influence of two different polarizations of quantum oxygen vibrations on the spacial symmetry of the bound magnetic bipolaron in the context of the t-J model by using exact diagonalization within a limited functional space. Linear as well as quadratic electron-phonon coupling to trans...<br/>[Phys. Rev. Lett. 103, 186401] Published Mon Oct 26, 2009 L. Vidmar, J. Bonča, S. Maekawa, and T. Tohyama 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186401 Phys. Rev. Lett. 103, 186401 text/html article Physical Review Letters 103 18 2009-10-26T00:00:00-04:00 186401 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. Theory of the Optical Conductivity of Spin Liquid States in One-Dimensional Mott Insulators http://link.aps.org/doi/10.1103/PhysRevLett.103.177402 Author(s): Hosho Katsura, Masahiro Sato, Takashi Furuta, and Naoto Nagaosa<br/>The low-energy dynamical optical response of dimerized and undimerized spin liquid states in a one-dimensional charge transfer Mott insulator is theoretically studied. An exact analysis is given for the low-energy asymptotic behavior using conformal field theory for the undimerized state. In the dim...<br/>[Phys. Rev. Lett. 103, 177402] Published Fri Oct 23, 2009 Hosho Katsura, Masahiro Sato, Takashi Furuta, and Naoto Nagaosa 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.177402 Phys. Rev. Lett. 103, 177402 text/html article Physical Review Letters 103 17 2009-10-23T00:00:00-04:00 177402 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc.