http://prb.aps.org/ Accepted Papers for Physical Review B en-us Copyright (c) 2008 The American Physical Society 2008-07-20T21:00:14-04:00 assocpub@aps.org rss@aps.org hourly 4 2008-07-20T21:00:14-04:00 rss@aps.org http://prb.aps.org/accepted/B/42078OcdF461d315805215c1a792c4f9d7edc4ed2 We report on an investigation of the double-layer manganite series  (0 z 1), carried out on single crystals by means of both macroscopic magnetometry and local probes of magnetism (mSR, 55Mn NMR). Muons and NMR demonstrate an antiferromagnetically ordered ground state at non-ferromagnetic compo... G. Allodi, M. Bimbi, De Renzi De Renzi R., C. Baumann, M. Apostu, R. Suryanarayanan and A. Revcolevschi 2008-07-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/B/a2076OcfF16E211e10248054cafb555825629a610 The bilayer manganite La1.2Sr1.8Mn2O7 (LSMO) exhibits a phase transition from a paramagnetic insulating (PI) to a ferromagnetic metallic (FM) state with a colossal magnetoresistance (CMR) effect. Upon 60% Pr-substitution both the magnetic order and PI to FM transition are suppressed. However, applic... F. Moussa, M. Hennion, A. Gukasov, S. Petit, L. P. Regnault, A. Ivanov, R. Suryanarayanan, M. Apostu and A. Revcolesvschi 2008-07-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/B/d0072O11Fd11b40d276d25f8da0e6133f6b568b0a We present a detailed analytical theory for the plasmonic nanoring configuration first proposed in [A. Al, A. Salandrino, N. Engheta, Opt. Expr. 14, 1557 (2006)], which is shown to provide negative magnetic permeability and negative index of refraction at infrared and optical frequencies. We show an... Andrea Alu and Nader Engheta 2008-07-18T00:00:00-04:00 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/L/04079Y43Y3d15a15d6ee8f81796af2e712bae7fd1 We demonstrate that a metamaterial formed by crossed metallic wires is characterized by an anomalously high index of refraction. Such property does not rely on a resonant response of the inclusions, but is rather a consequence of the ultrahigh-density of the wires and of the strong electromagnetic i... Mario G. Silveirinha and Carlos A. Fernandes 2008-07-18T00:00:00-04:00 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/2007dO72G2718202b68796d2e7f3d65c267d1c441 We predict surface electromagnetic waves propagating across the layers of intrinsic Josephson junctions. We find the spectrum of the surface waves and study the distribution of the electromagnetic field inside and outside the superconductor. The profile of the amplitude oscillations of the electric ... V. A. Yampolskii, D. R. Gulevich, Sergey Savelev and Franco Nori 2008-07-18T00:00:00-04:00 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/c707dOfdFb7E4d1961bc06c7b0cbccaeba48dbd2e The dynamics of magnetization in the presence of spin-transfer torque was studied. We derived the equation for the motion of magnetization in the presence of a spin current by using the local equilibrium assumption in non-equilibrium thermodynamics. We show that, in the resultant equation, the ratio... Kazuhiko Seki and Hiroshi Imamura 2008-07-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/L/3a078Ye6Ee110d1ba8a64b90fbc06b8a6d0c613b5 When an excess charge carrier is added to a semiconducting polymer chain, it is well known that the carrier may self-trap into a polaronic state accompanied by a bond length adjustment pattern. A different mechanism of self-localization is the solvation of charge carriers expected to take place when... M. L. Mayo and Yu. N. Gartstein 2008-07-18T00:00:00-04:00 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/8c071YbbY7c1281be47c74c332629ebec9aee8aae We present an extensive soft x-ray photoelectron spectroscopy study on the core levels of the endohedral atoms of Ba8Ga16Ge30 (BGG), Sr8Ga16Ge30 (SGG), Eu8Ga16Ge30 (EGG), and Sr8Ga16Si30 (SGS) single crystals, performed at a high-energy facility. Unexpected features evidencing the different shift fo... Jun Tang, Takeshi Rachi, Ryotaro Kumashiro, Marcos A. Avila, Kouichirou Suekuni, Toshiro Takabatake, FangZhun Guo, Keisuke Kobayashi, Koji Akai and Katsumi Tanigaki 2008-07-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors I: bulk Semiconductors I: bulk http://prb.aps.org/accepted/B/1007cO77F381820460fb2b5650ca3d1baa87052f8 Periodic nanostructures can display the dynamics of arrays of atoms while enabling the tuning of interactions in ways not normally possible in Nature. We examine one dimensional arrays of a "synthetic atom," a one dimensional ring with a nearest neighbor Coulomb interaction. We consider the classica... Bahman Roostaei, Kieran J. Mullen and A. T. Rezakhani 2008-07-18T00:00:00-04:00 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/3107eO2bF8e1ef0c48a290f18ea6f1b754475aef7 We present a real-space method for electronic-structure calculations of systems with general full or partial periodicity. The method is based on the self-consistent solution of the Kohn-Sham equations, using first principles pseudopotentials, on a uniform three-dimensional non-Cartesian grid. Its ef... Amir Natan, Ayelet Benjamini, Doron Naveh, Leeor Kronik, Murilo L. Tiago, Scott P. Beckman and James R. Chelikowsky 2008-07-18T00:00:00-04:00 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/6e076OacD771ba02c91c71514f3dc006af7bfc844 According to traditional point of view interstitial H in ZnO is a shallow donor. We report that the feature can be inhibited by another interstitial H. Although there is a chemical bonding between the two H atoms, they can not necessarily be considered as a H2 molecule: one of the H atoms is tightly... S.Zh. Karazhanov and A. G. Ulyashin 2008-07-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors I: bulk Semiconductors I: bulk http://prb.aps.org/accepted/L/a107aY34Da11e01b060c65845e2783f7ea94613ae We have discussed a consistency condition of Berry phases defined by a local gauge twist and spatial symmetries of the many body system. It imposes a non trivial gap closing condition under the gauge twist in both finite- and infinite-size systems. It also implies a necessary condition for the gappe... T. Hirano, H. Katsura and Y. Hatsugai 2008-07-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/L/18074Y50Y391b90b89672f56cb3848679c4bfac80 Boris B. Straumal, Alena S. Gornakova, Olga A. Kogtenkova, Svetlana G. Protasova, Vera G. Sursaeva and Brigitte Baretzky 2008-07-18T00:00:00-04:00 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/9f071O7fEb11470f481454b585b4c0564f520e59b Quantum confinement of the transverse electron motion is the major effect governing the superconducting properties of high-quality metallic nanofilms, leading to a nonuniform transverse distribution of the superconducting condensate. In this case the order parameter can exhibit significant local enh... A. A. Shanenko, M. D. Croitoru and F. M. Peeters 2008-07-18T00:00:00-04:00 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/ac072O5dD1515e0596ce3c32d3695c16a67e05de5 Polarization switching in ferroelectric polymers is studied using a multi-scale framework. A continuum Landau-Ginzburg-Devonshire (LGD) model for a first order phase transition is parameterized for ideal all trans chains of P(VDF-TrFe) (70:30) copolymers using data obtained from molecular dynamics (... Rajeev Ahluwalia, Michael B. Sullivan, David J. Srolovitz, Jian Wei Zheng and Alfred C. H. Huan 2008-07-18T00:00:00-04:00 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/c9075Oe1E721aa0a49c042c01fb5af2327fe60ae7 We study the effect of mechanical boundary conditions on the phase separation of elastically coupled binary alloys. Two distinct boundary conditions are considered; clamped boundaries in which there is no macroscopic shape change and the traction free boundaries where a net shape change of the grain... Justin C. W. Song and Rajeev Ahluwalia 2008-07-18T00:00:00-04:00 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/L/0b077Yb5U6d1c11635796c09bed2391dc2a633811 The non-covalent hydrogen binding on transition metal atoms dispersed on carbon clusters and graphene is studied with the use of the pseudopotential density functional method. It is found that the presence of acceptor-like states in the absorbents is essential for enhancing the metal adsorption stre... Gyubong Kim, SeungHoon Jhi, Noejung Park, Steven G. Louie and Marvin L. Cohen 2008-07-18T00:00:00-04:00 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/f7070Y2eA0e1051e93aa5e07806974925cf1bb08f An experimental evidence of the effects of iron on the magnetic and local electronic properties of TiO2 single crystals is provided. When ferromagnetic rutile TiO2 single crystals are doped with Fe ions, an enhancement of the saturation magnetic moment is observed, along with a transfer of electrons... L. Sangaletti, M. C. Mozzati, G. Drera, P. Galinetto, C. B. Azzoni, A. Speghini and M. Bettinelli 2008-07-17T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Semiconductors I: bulk Semiconductors I: bulk http://prb.aps.org/accepted/B/2e074O70C1814102373b50025ec3044222a9aa5ed We theoretically investigate shuttle instability induced by an AC gate in a nano electromechanical single electron transistor (NEM-SET) containing a moveable grain. The AC gate causes periodic variations of charge on the grain, which turn, in the bias field, to driving force of grain vibrations. The... Norihiko Nishiguchi 2008-07-17T00:00:00-04:00 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/3d076Oa5Cea12804289029d11230c005e4ab7817f Very recently, in a short letter [Appl. Phys. Lett. 91, 111111 (2007)], we outlined some important results of electromagnetic transmission in dual-metallic grating structures composed of two identical single-metallic gratings with periodic subwavelength slit arrays. Here we describe and explain our ... Chen Cheng, Jing Chen, DaJian Shi, Wu QiYang, FangFang Ren, Xu Ji, YaXian Fan, Jianping Ding and HuiTian Wang 2008-07-17T00:00:00-04:00 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/ae071Ob4Dc41af05e73f184305424ee847e088c29 We study the proximity effect within a junction made of an unconventional superconductor (US) and a ferromagnet (F) in the clean limit with high barrier transparency. Superconductivity in the US side is described by an extended Hubbard model with intersite attractive interaction, while metallic ferr... Mario Cuoco, Alfonso Romano, Canio Noce and Paola Gentile 2008-07-17T00:00:00-04:00 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/e5070O7cC6cW011db0bc7f89a514bef29e27597d6 Particles formed during the reaction of cerium with hydrogen fractured into stacked plates with fully-separated plate thicknesses averaging 100 nm and a finer partially-separated thickness of 30 nm. The phonon density of states of these particles, measured using inelastic neutron scattering, showed ... M. E. Manley, F. Trouw, D. Teter, M. P. Hehlen, P. A. Papin, D. J. Thoma and W. L. Hults 2008-07-17T00:00:00-04:00 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/56072O2aEb218406e9879809fc6e1b99803f1a559 We study thermal broadening of the hole spectral function of the two-dimensional t-J model (and its extensions) within the non-crossing approximation (NCA) with and without the contribution of optical phonons. We find that phonons at finite temperature broaden the lowest energy quasiparticle peak, h... Satyaki Kar and Efstratios Manousakis 2008-07-17T00:00:00-04:00 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/5d077O96D8110c01f7351934935c17c2edfca0fa2 In , the Ni3+ ions, with S=1/2 and twofold orbital degeneracy, are arranged on a triangular lattice. Using muon spin relaxation (mSR) and electron spin resonance (ESR), we show that magnesium doping does not stabilize any magnetic or orbital order, despite the absence of interplane Ni2+. A disordere... M. Bonda, M. Holzapfel, de Brion de Brion S., C. Darie, T. Feher, P. J. Baker, T. Lancaster, S. J. Blundell and F. L. Pratt 2008-07-17T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism http://prb.aps.org/accepted/L/4007cYb7Q271601308be195441b0afe6573da5e0e Soft x-ray resonant magnetic scattering (SXRMS) has been used to probe the antiferromagnetic (AF) coupling in Co-Si/Si amorphous multilayers in combination with magneto-optical measurements. The study confirms the existence of the multilayers AF state at low fields. In addition, a shift of AF order ... S. M. Valvidares, C. Quiros, A. Mirone, J. M. Tonnerre, S. Stanescu, P. Bencok, Y. Souche, L. Zarate, J. I. Martin, M. Velez, N. B. Brookes and J. M. Alameda 2008-07-17T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review B Magnetism Magnetism