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Recent Articles in Phys. Rev. B
Recent articles in Physical Review B
Electronic properties of bilayer and multilayer graphene Author(s): Johan Nilsson, A. H. Castro Neto, F. Guinea, and N. M. R. Peres We study the effects of site dilution disorder on the electronic properties in graphene multilayers, in particular the bilayer and the infinite stack. The simplicity of the model allows for an easy implementation of the coherent-potential approximation and some analytical results. Within the model w... [Phys. Rev. B 78, 045405] Published Wed Jul 02, 2008 Spin-dependent processes at the crystalline Si-SiO_{2} interface at high magnetic fields Author(s): D. R. McCamey, G. W. Morley, H. A. Seipel, L. C. Brunel, J. van Tol, and C. Boehme An experimental study on the nature of spin-dependent excess charge-carrier transitions at the interface between (111)-oriented phosphorous-doped ([P]?10^{15} ?cm^{?3} ) crystalline silicon and silicon dioxide at high magnetic field (B_{0} ?8.5?T) is presented. Electrically detected magnet... [Phys. Rev. B 78, 045303] Published Wed Jul 02, 2008 Spin Nernst effect and Nernst effect in two-dimensional electron systems Author(s): Shu-guang Cheng, Yanxia Xing, Qing-feng Sun, and X. C. Xie We study the Nernst effect and the spin Nernst effect and show that a longitudinal thermal gradient induces a transverse voltage and a spin current. A mesoscopic four-terminal cross-bar device having the Rashba spin-orbit interaction (SOI) under a perpendicular magnetic field is considered. For zero... [Phys. Rev. B 78, 045302] Published Wed Jul 02, 2008 Four-step evolution of spin Hall conductance: Tight-binding electrons with Rashba coupling in a magnetic field Author(s): Yi-Fei Wang, Yang Zhao, and Chang-De Gong We report the investigation of magnetotransport properties of tight-binding electrons with Rashba spin-orbit coupling (SOC). Four-step evolutions of the spin Hall and charge-Hall conductances (SHC and CHC) have been found when fixing the magnetic field and tuning the Rashba SOC: the SHC shows size-d... [Phys. Rev. B 78, 045301] Published Wed Jul 02, 2008 Submonolayer regime of Co epitaxy on Pd(111): Morphology and electronic structure Author(s): M. Wasniowska, W. Wulfhekel, M. Przybylski, and J. Kirschner We report on the early stage of Cobalt growth on Pd(111) studied with scanning tunneling microscopy. The electronic structure of the islands grown at 550 and 300 K was studied with scanning tunneling spectroscopy at low temperatures. Triangular monolayer-high islands grown at 550 K show fcc or hcp s... [Phys. Rev. B 78, 035405] Published Wed Jul 02, 2008 Nonlocal effects in the plasmons of nanowires and nanocavities excited by fast electron beams Author(s): Javier Aizpurua and Alberto Rivacoba The solutions of surface modes in cylindrical metallic wires and cavities are obtained within a nonlocal dielectric formalism. We compare the results with those obtained from standard local approaches. The specular reflection model is applied to describe the nonlocal potentials in the vicinity of th... [Phys. Rev. B 78, 035404] Published Wed Jul 02, 2008 From slow to superluminal propagation: Dispersive properties of surface plasmon polaritons in linear chains of metallic nanospheroids Author(s): Alexander A. Govyadinov and Vadim A. Markel We consider propagation of surface plasmon polaritons (SPPs) in linear periodic chains (LPCs) of prolate and oblate metallic spheroids. We show that the SPP group velocity can be efficiently controlled by varying the aspect ratio of the spheroids. For sufficiently small aspect ratios, a gap appears ... [Phys. Rev. B 78, 035403] Published Wed Jul 02, 2008 Formation of epitaxial gold nanoislands on (100) silicon Author(s): Emanuela Piscopiello, Leander Tapfer, Marco Vittori Antisari, Pasquale Paiano, Paola Prete, and Nicola Lovergine Coherent gold nanoislands were prepared directly on (100)-oriented Si substrates by a physical methodology, consisting of the thermal evaporation of a very thin Au film (t?2?nm) and its successive annealing in the temperature range 350?°C[Phys. Rev. B 78, 035305] Published Wed Jul 02, 2008 Quantum diffusion and localization in disordered electronic systems Author(s): P. R. Wells, J. d'Albuquerque e Castro, and S. L. A. de Queiroz The diffusion of electronic wave packets in one-dimensional systems with on-site, binary disorder is numerically investigated within the framework of a single-band tight-binding model. Fractal properties are incorporated by assuming that the distribution of distances ? between consecutive impuriti... [Phys. Rev. B 78, 035102] Published Wed Jul 02, 2008 Experimental evidence of interface resonance states in single-crystal magnetic tunnel junctions Author(s): P.-J. Zermatten, G. Gaudin, G. Maris, M. Miron, A. Schuhl, C. Tiusan, F. Greullet, and M. Hehn All solid-state tunnel spectroscopy experiments performed on single-crystal Fe/MgO/Fe magnetic tunnel junctions show sharp features at 0.2 and 1.1 V. These peaks are observed on the electrical differential conductivity only in the antiparallel magnetic configuration and only for the voltage sign cor... [Phys. Rev. B 78, 033301] Published Wed Jul 02, 2008