http://prb.aps.org/ Accepted Papers for Physical Review B en-us Copyright (c) 2009 The American Physical Society 2009-11-20T20:05:03-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-20T20:05:03-05:00 rss@aps.org http://prb.aps.org/accepted/L/e8073YbcS4119621526585f42380753505103270e We demonstrate that the presence of charges around a semiconductor quantum dot (QD) strongly affects its optical properties and produces non-resonant coupling to the modes of a microcavity. We show that, besides (multi)exciton lines, a QD generates a spectrally broad emission which efficiently coupl... N. Chauvin, C. Zinoni, M. Francardi, A. Gerardino, L. Balet, B. Alloing, L.H Li. and A. Fiore 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/B/f007dO9dX7bW491850e59633eb16b83923937a34e Based on the tight-binding model, we investigate band structures of graphene nanohole (GNH) superlattices as a function of NH size and density. One common origin of band gaps for GNH superlattices with NHs of either armchair or zigzag edges is the quantum confinement effect due to the periodic poten... Wei Liu, Z. F. Wang, Q. W. Shi, Jinlong Yang and Feng Liu 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Surface physics, low-dimensional systems, and related topics Surface physics, low-dimensional systems, and related topics http://prb.aps.org/accepted/L/ee071YbeT9e1e32455dc26e4de6f164e6ce54f15e A unified approach to decoherence and relaxation of energy resolved single electron excitations in Integer Quantum Hall edge channels is presented. Within the bosonization framework, relaxation and decoherence induced by interactions and capacitive coupling to an external linear circuit are computed... P. Degiovanni, Ch. Grenier and G. Feve 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/B/a9079O87R1719e1ac4b82397347f16d9403a48db7 A novel approach to calculation of reciprocal space maps of x-ray diffraction from partially relaxed multilayered epitaxial structures is reported. The theory takes into account the additional harmonics of wave field caused by the difference in the lateral projections of reciprocal vectors in the sa... A. I. Benediktovich, I. D. Feranchuk and A. Ulyanenkov 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/L/bf07dY03Rda1402997038e8903dd57dba9c82c4af First-principles molecular dynamics simulations based on a new exchange-correlation functional show that self-diffusion in the refractory metal molybdenum is associated with strongly temperature dependent activation energies for vacancy formation and migration. While static calculations of self-diff... T. R. Mattsson, N. Sandberg, R. Armiento and A. E. Mattsson 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Structure, structural phase transitions, mechanical properties, defects, etc. Structure, structural phase transitions, mechanical properties, defects, etc. http://prb.aps.org/accepted/L/13073Y96Q8b1a82e30b52264c9cb94eb8e825ed96 The high-energy kink or the waterfall effect seen in the photoemission spectra of cuprates is suggestive of the coupling of quasiparticles to a high energy bosonic mode with implications for the mechanism of superconductivity. Recent experiments however indicate that this effect may be an artifact p... Susmita Basak, Tanmoy Das, Hsin Lin, J. Nieminen, M. Lindroos, R. S. Markiewicz and A. Bansil 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Superfluidity and superconductivity Superfluidity and superconductivity http://prb.aps.org/accepted/B/59075O75W0a15f17d4fb64519beded57b91273084 We have applied density functional theory based ab initio molecular dynamics (AIMD) to examine Li4BN3H10 at temperatures both above and below the experimental melting point. We examine the structure of the liquid, diffusivity, vibrational spectra and compare to both experimental data and analogous p... David E. Farrell, Dongwon Shin and C. Wolverton 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Inhomogeneous, disordered, and partially ordered systems Inhomogeneous, disordered, and partially ordered systems http://prb.aps.org/accepted/B/4207fOd2W9110e1d80880e63ca7d7c315b93085a0 We describe two different nuclear quadrupole resonance (NQR) based techniques, designed to measure the local asymmetry of the internal electric field gradient h, and the tilt angle a of the main NQR principal axis from the crystallographic axis. These techniques use the dependence of the NQR signal ... Rinat Ofer and Amit Keren 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Superfluidity and superconductivity Superfluidity and superconductivity http://prb.aps.org/accepted/B/ed074O8fW191d114142127c78f60ed02bf2e0634d We establish the phase diagram of the disordered three-dimensional Bose-Hubbard model at unity filling which has been controversial for many years. The theorem of inclusions, proven in Ref. , states that the Bose glass phase always intervenes between the Mott insulating and superfluid phases. H... V. Gurarie, L. Pollet, N. V. Prokofev, B. V. Svistunov and M. Troyer 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Superfluidity and superconductivity Superfluidity and superconductivity http://prb.aps.org/accepted/B/5207eO71W7eE521b81934624860c61adbf292f499 Based on the Hubbard model of strongly correlated systems, a reduction in the bandwidth of the electrons can yield a substantial change in the properties of the material. One method to modify the bandwidth is geometrically confined doping, i.e. the introduction of a (thin) dopant layer in a material... U. Luders, W. C. Sheets, A. David, W. Prellier and R. Fersard 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Electronic structure: wide-band, narrow-band, and strongly correlated systems Electronic structure: wide-band, narrow-band, and strongly correlated systems http://prb.aps.org/accepted/B/dd073OddUdd12917823b586688db61034fb7724f0 In the present article we investigate the influence of the contact region on the distribution of the chemical potential in integer quantum Hall samples, as well as the longitudinal and Hall resistance as a function of the magnetic field. First we use a standard quantum Hall sample geometry and analy... Christoph Uiberacker, Christian Stecher and Josef Oswald 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/B/6707cO02W621a51c43e45a490ece520638c3e8cf1 We performed ab initio density functional theory calculations to investigate the process of hydrogenation of a bilayer of graphene. 50% hydrogen coverage is possible in case that the hydrogen atoms are allowed to adsorb on both sides of the bilayer. In this case interlayer chemical bonding occurs wh... O. Leenaerts, B. Partoens and F. M. Peeters 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Surface physics, low-dimensional systems, and related topics Surface physics, low-dimensional systems, and related topics http://prb.aps.org/accepted/B/14071O3fWc311c10212060d34ca0dd1733d44e7af We present an efficient generalization of the k-space interpolation scheme for electronic structure presented by E. L. Shirley, Phys. Rev. B 54, 16464 (1996). The method permits the construction of a compact k-dependent Hamiltonian using a numerically optimal basis derived from a coarse-grained set ... David Prendergast and Steven G. Louie 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Electronic structure: wide-band, narrow-band, and strongly correlated systems Electronic structure: wide-band, narrow-band, and strongly correlated systems http://prb.aps.org/accepted/B/49076Oa5X9cEc11281584536a4491bd34bb22dba9 We report measurements of the thermoelectric power (TEP) for a series of Pb1-xTlxTe crystals with x = 0.0 to 1.3%. Although the TEP is very large for x = 0.0, using a single band analysis based on older work for dilute magnetic alloys we do find evidence for a Kondo contribution of 11 - 18 mV/K. Thi... M. Matusiak, E. M. Tunnicliffe, J. R. Cooper, Y. Matsushita and I. R. Fisher 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/L/21079YdaMa01321af7ad11f7d9461028e10fa9955 FeVO4 has been studied by heat capacity, magnetic susceptibility, electric polarization and single crystal neutron diffraction experiments. The triclinic crystal structure is made of S-shaped clusters of six Fe3+ ions, linked by VO43- groups. Two long-range magnetic ordering transitions occur at TN1... A. Daoud Aladine, B. Kundys, C. Martin, P. G. Radaelli, P. J. Brown, C. Simon and L. C. Chapon 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/B/a507bO47Sfd1c518e407299667a4fb417891d7835 The mixture of the scalar bosonic and the spinless or polarized fermionic cold atoms in the one-dimensional optical lattice is studied. The system is modeled by the Bose-Fermi-Hubbard Hamiltonian, which shows different behavior from that of the Bose-Hubbard or the Fermi-Hubbard models. Because the S... Shi Gu Jian, Junpeng Cao, Shu Chen and HaiQing Lin 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Superfluidity and superconductivity Superfluidity and superconductivity http://prb.aps.org/accepted/B/0b077O23U691cc10f01f81a0292653ec73436c105 We present a theory of valence holes as Luttinger spinor based qubits in p-doped self-assembled quantum dots within the 4-band k·p formalism. The two qubit levels are identified with the two chiralities of the doubly degenerate ground state. We show that single qubit operations can be implement... ChangYu Hsieh, Ross Cheriton, Marek Korkusinski and Pawel Hawrylak 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/B/53074O77T621e11f740e73e0e9978ce48ead5d73c We develop simple density-matrix models to describe the role of coherence in resonant-tunneling (RT) transport of quantum-cascade lasers (QCLs). Specifically, we investigate the effects of coherent coupling between the lasing levels with other levels on the transport properties and gain spectra. In ... Sushil Kumar and Qin Hug 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/B/22070O19We71c71991db1ea6a980042d2fffc801b In this article we explain the origin of the ring structure that sometimes forms a sharp border surrounding field emission electron microscopy patterns from carbon nanotubes (CNTs) at high current. The rings turn out to be due to the self-focusing of thermal field electrons emitted from the near-cap... Mickael Marchand, Catherine Journet, Christophe Adessi and Stephen T. Purcell 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Surface physics, low-dimensional systems, and related topics Surface physics, low-dimensional systems, and related topics http://prb.aps.org/accepted/B/7f07dO6aT8419e10a26130c9b2b6b06de3e1398ac We investigate theoretically two-photon processes in a microcavity containing one quantum dot in the strong coupling regime. The cavity mode can be tuned to resonantly drive the two-photon transition between the ground and the biexciton states, while the exciton states are far-off resonance due to t... Elena del Valle, Stefano Zippilli, Fabrice P. Laussy, Alejandro Gonzalez Tudela, Giovanna Morigi and Carlos Tejedor 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/L/00076Y07Td210325748882125bc8f89345d160453 The spin-split states subject to Rashba spin-orbit coupling in two-dimensional systems has long been accepted as pointing inplane and perpendicular to the corresponding wave vectors. This is in general true for free electron model, but exceptions do exist elsewhere. Within the tight-binding model, w... MingHao Liu and ChingRay Chang 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors II: surfaces, interfaces, microstructures, and related topics Semiconductors II: surfaces, interfaces, microstructures, and related topics http://prb.aps.org/accepted/L/28077Y3aTcc1592197a82949df43d8d6e5fbdfa39 The computer simulations of the process of single pulse readout from a two state quantum system, describing the phase qubit, is performed in the frame of one-dimensional Schroedinger equation. It has been demonstrated that the readout error can be minimized by choosing the optimal pulse duration and... Andrey L. Pankratov and Andrey S. Gavrilov 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Superfluidity and superconductivity Superfluidity and superconductivity http://prb.aps.org/accepted/B/5c071O5eSc11fa1482cd403022fe1819d4304d737 One of the unusual features of the Mn+1AXn phases (where M is a transition metal, A is a group A element, X is carbon or nitrogen and n = 1,2,3...) is that for a given M-A-X system, only certain values of n are found to occur and there is no systematic behaviour between the different systems. Densit... V. J. Keast, S. Harris and D. K. Smith 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Structure, structural phase transitions, mechanical properties, defects, etc. Structure, structural phase transitions, mechanical properties, defects, etc. http://prb.aps.org/accepted/B/8907cO7bWed1331943d11d8506b5963007b58684f With the implementation of a relativistic Korringa-Kohn-Rostoker Green's function and band structure method, we analyze the spin expectation value of the electron states on the Fermi surface of non-magnetic as well as magnetic metals. It is shown that for relatively light elements like Cu the spin s... Martin Gradhand, Michael Czerner, Dmitry V. Fedorov, Peter Zahn, Bogdan Yu. Yavorsky, Laszlo Szunyogh and Ingrid Mertig 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/L/4207cYdeWa21d718c8e827b1194ba8d99a86beb68 We have used X-ray magnetic circular dichroism (XMCD) and ab-initio electronic structure calculation techniques to investigate the magnetic properties of high quality epitaxial (110) and (100) CrO2 thin films. A relatively larger XMCD was observed on the Cr L2,3 edge of (110) oriented CrO2 films com... Manjit Pathak, Hunter Sims, Krishna B. Chetry, Dipanjan Mazumdar, Patrick R. Le Clair, Gary J. Mankey, William H. Butler and Arunava Gupta 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism