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Magnetic anisotropy in epitaxial Py/FeMn/Cu(001) and Py/FeMn/Ni/Cu(001) films (2013)

A. Tan, J. Li, C. A. Jenkins, E. Arenholz, A. Scholl, C. Hwang, and Z. Q. Qiu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): A. Tan, J. Li, C. A. Jenkins, E. Arenholz, A. Scholl, C. Hwang, and Z. Q. Qiu Py/FeMn/Cu(001) and Py/FeMn/Ni/Cu(001) films were grown and studied as a function of both the FeMn and the Ni thicknesses using rotating magneto-optic Kerr effect and x-ray magnetic circular dichroism. For Py/FeMn/Cu(001), we find that the FeMn antiferromagnetic order switches the sign of the Py fou... [Phys. Rev. B 88, 104404] Published Fri Sep 06, 2013

Schlagwort(e): Magnetism

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Beyond-mean-field behavior of large Bose-Einstein condensates in double-well potentials (2013)

Bettina Gertjerenken and Christoph Weiss

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): Bettina Gertjerenken and Christoph Weiss For the dynamics of Bose-Einstein condensates (BECs), differences between mean-field (Gross-Pitaevskii) physics and N -particle quantum physics often disappear if the BEC becomes larger and larger. In particular, the time scale for which both dynamics agree should thus become larger if the particle n... [Phys. Rev. A 88, 033608] Published Fri Sep 06, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Thermodynamics of strongly correlated one-dimensional Bose gases (2013)

Andreas Vogler, Ralf Labouvie, Felix Stubenrauch, Giovanni Barontini, Vera Guarrera, and Herwig Ott

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Andreas Vogler, Ralf Labouvie, Felix Stubenrauch, Giovanni Barontini, Vera Guarrera, and Herwig Ott We investigate the thermodynamics of one-dimensional (1D) Bose gases in the strongly correlated regime. To this end, we prepare ensembles of independent 1D Bose gases in a two-dimensional optical lattice and perform high-resolution in situ imaging of the column-integrated density distribution. Using... [Phys. Rev. A 88, 031603] Published Wed Sep 11, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Large quantum superpositions of a levitated nanodiamond through spin-optomechanical coupling (2013)

Zhang-qi Yin, Tongcang Li, Xiang Zhang, and L. M. Duan

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Zhang-qi Yin, Tongcang Li, Xiang Zhang, and L. M. Duan We propose a method to generate and detect large quantum superposition states and arbitrary Fock states for the oscillational mode of an optically levitated nanocrystal diamond. The nonlinear interaction required for the generation of non-Gaussian quantum states is enabled through the spin-mechanica... [Phys. Rev. A 88, 033614] Published Wed Sep 11, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Rerouting excitation transfers in the Fenna-Matthews-Olson complex (2013)

Guang-Yin Chen, Neill Lambert, Che-Ming Li, Yueh-Nan Chen, and Franco Nori

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-13

Beschreibung: Author(s): Guang-Yin Chen, Neill Lambert, Che-Ming Li, Yueh-Nan Chen, and Franco Nori We investigate, using the hierarchy method, the entanglement and the excitation transfer efficiency of the Fenna-Matthews-Olson (FMO) complex under two different local modifications: the suppression of transitions between particular sites and localized changes to the protein environment. We find tha... [Phys. Rev. E 88, 032120] Published Thu Sep 12, 2013

Schlagwort(e): Statistical Physics

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Advanced magnetic anisotropy determination through isothermal remanent magnetization of nanoparticles (2013)

A. Hillion, A. Tamion, F. Tournus, O. Gaier, E. Bonet, C. Albin, and V. Dupuis

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): A. Hillion, A. Tamion, F. Tournus, O. Gaier, E. Bonet, C. Albin, and V. Dupuis We propose a theoretical framework enabling the simulation of isothermal remanence magnetization (IRM) curves, based on the Stoner-Wohlfarth model combined with the Néel macrospin relaxation time description. We show how low temperature IRM curves, which have many advantages compared to hysteresis l... [Phys. Rev. B 88, 094419] Published Fri Sep 13, 2013

Schlagwort(e): Magnetism

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Magnetic structure of the frustrated S=1/2 chain magnet LiCu_{2}O_{2} doped with nonmagnetic Zn (2013)

A. A. Bush, N. Büttgen, A. A. Gippius, V. N. Glazkov, W. Kraetschmer, L. A. Prozorova, L. E. Svistov, A. M. Vasiliev, and A. Zheludev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): A. A. Bush, N. Büttgen, A. A. Gippius, V. N. Glazkov, W. Kraetschmer, L. A. Prozorova, L. E. Svistov, A. M. Vasiliev, and A. Zheludev We present the results of magnetization, electron spin resonance (ESR), and nuclear magnetic resonance (NMR) measurements on single-crystal samples of the frustrated S =1/2 chain cuprate LiCu 2 O 2 doped with nonmagnetic Zn 2+ . As shown by the x-ray techniques, the crystals of Li(Cu 1− x Zn x ) 2 O 2 with x 〈0... [Phys. Rev. B 88, 104411] Published Fri Sep 13, 2013

Schlagwort(e): Magnetism

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Chiral anomaly and classical negative magnetoresistance of Weyl metals (2013)

D. T. Son and B. Z. Spivak

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): D. T. Son and B. Z. Spivak We consider the classical magnetoresistance of a Weyl metal in which the electron Fermi surface possesses nonzero fluxes of the Berry curvature. Such a system may exhibit large negative magnetoresistance with unusual anisotropy as a function of the angle between the electric and magnetic fields. In ... [Phys. Rev. B 88, 104412] Published Fri Sep 13, 2013

Schlagwort(e): Magnetism

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Postadiabatic Hamiltonian for low-energy excitations in a slowly-time-dependent BCS-BEC crossover (2013)

Bernhard M. Breid and James R. Anglin

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Bernhard M. Breid and James R. Anglin We develop a Hamiltonian that describes the time-dependent formation of a molecular Bose-Einstein condensate from a Bardeen-Cooper-Schrieffer state of fermionic atoms as a result of slowly sweeping through a Feshbach resonance. In contrast to many other calculations in the field, our Hamiltonian inc... [Phys. Rev. A 88, 033617] Published Mon Sep 16, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Energy-resolved magnetic domain imaging in TbCo alloys by valence band photoemission magnetic circular dichroism (2013)

Pascal Melchior, Markus Rollinger, Philip Thielen, Sabine Alebrand, Ute Bierbrauer, Christian Schneider, Matthias Gottwald, Michel Hehn, Stéphane Mangin, Mirko Cinchetti, and Martin Aeschlimann

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): Pascal Melchior, Markus Rollinger, Philip Thielen, Sabine Alebrand, Ute Bierbrauer, Christian Schneider, Matthias Gottwald, Michel Hehn, Stéphane Mangin, Mirko Cinchetti, and Martin Aeschlimann We report magnetic domain imaging of a terbium cobalt (TbCo) alloy thin film with a high perpendicular magnetic anisotropy in one- and two-photon photoemission electron microscopy (PEEM). Both photoemission processes deliver a clear magnetic circular dichroism (MCD) whose strength is strongly energy... [Phys. Rev. B 88, 104415] Published Wed Sep 18, 2013

Schlagwort(e): Magnetism

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Dzyaloshinskii-Moriya driven helical-butterfly structure in Ba_{3}NbFe_{3}Si_{2}O_{14} (2013)

V. Scagnoli, S. W. Huang, M. Garganourakis, R. A. de Souza, U. Staub, V. Simonet, P. Lejay, and R. Ballou

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): V. Scagnoli, S. W. Huang, M. Garganourakis, R. A. de Souza, U. Staub, V. Simonet, P. Lejay, and R. Ballou We have used soft x-ray magnetic diffraction at the Fe 3+ L 2,3 edges to examine to what extent the Dzyaloshinsky-Moriya interaction in Ba 3 NbFe 3 Si 2 O 14 influences its low-temperature magnetic structure. A modulated component of the moments along the c axis is present, adding to the previously proposed ... [Phys. Rev. B 88, 104417] Published Wed Sep 18, 2013

Schlagwort(e): Magnetism

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Crossover behavior in driven cascades (2013)

James Burridge

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): James Burridge We propose a model which explains how power-law crossover behavior can arise in a system which is capable of experiencing cascading failure. In our model the susceptibility of the system to cascades is described by a single number, the propagation power , which measures the ease with which cascades p... [Phys. Rev. E 88, 032124] Published Wed Sep 18, 2013

Schlagwort(e): Statistical Physics

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Extended finite-size scaling of synchronized coupled oscillators (2013)

Chulho Choi, Meesoon Ha, and Byungnam Kahng

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): Chulho Choi, Meesoon Ha, and Byungnam Kahng We present a systematic analysis of dynamic scaling in the time evolution of the phase order parameter for coupled oscillators with nonidentical natural frequencies in terms of the Kuramoto model. This provides a comprehensive view of phase synchronization. In particular, we extend finite-size scali... [Phys. Rev. E 88, 032126] Published Wed Sep 18, 2013

Schlagwort(e): Statistical Physics

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Correlation lengths of the repulsive one-dimensional Bose gas (2013)

Ovidiu I. Pâţu and Andreas Klümper

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): Ovidiu I. Pâţu and Andreas Klümper We investigate the large-distance asymptotic behavior of the static density-density and field-field correlation functions in the one-dimensional Bose gas at finite temperature. The asymptotic expansions of the Bose gas correlators are obtained performing a specific continuum limit in the similar low... [Phys. Rev. A 88, 033623] Published Thu Sep 19, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Coherent magnon and acoustic phonon dynamics in tetragonal and rare-earth-doped BiFeO_{3} multiferroic thin films (2013)

K. I. Doig, F. Aguesse, A. K. Axelsson, N. M. Alford, S. Nawaz, V. R. Palkar, S. P. P. Jones, R. D. Johnson, R. A. Synowicki, and J. Lloyd-Hughes

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): K. I. Doig, F. Aguesse, A. K. Axelsson, N. M. Alford, S. Nawaz, V. R. Palkar, S. P. P. Jones, R. D. Johnson, R. A. Synowicki, and J. Lloyd-Hughes Coherent magnons and acoustic phonons were impulsively excited and probed in thin films of the room temperature multiferroic Bi 1− x − y Dy x La y FeO 3 using femtosecond laser pulses. The elastic moduli of rhombohedral, tetragonal, and rare-earth doped BiFeO 3 were determined from acoustic-mode frequencies in... [Phys. Rev. B 88, 094425] Published Thu Sep 19, 2013

Schlagwort(e): Magnetism

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Minimal spanning trees at the percolation threshold: A numerical calculation (2013)

Sean M. Sweeney and A. Alan Middleton

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): Sean M. Sweeney and A. Alan Middleton The fractal dimension of minimal spanning trees on percolation clusters is estimated for dimensions d up to d =5. A robust analysis technique is developed for correlated data, as seen in such trees. This should be a robust method suitable for analyzing a wide array of randomly generated fractal struc... [Phys. Rev. E 88, 032129] Published Thu Sep 19, 2013

Schlagwort(e): Statistical Physics

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Frieden wave-function representations via an Einstein-Podolsky-Rosen-Bohm experiment (2013)

J. Syska

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): J. Syska The appearance of the spin-1/2 and spin-1 representations in the Frieden-Soffer extreme physical information (EPI) statistical approach to the Einstein-Podolsky-Rosen-Bohm (EPR-Bohm) experiment is shown. In order to obtain the EPR-Bohm result, in addition to the observed structural and variational i... [Phys. Rev. E 88, 032130] Published Thu Sep 19, 2013

Schlagwort(e): Statistical Physics

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Orientation dependence of the critical magnetic field for multiferroic BiFeO_{3} (2013)

Randy S. Fishman

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): Randy S. Fishman Multiferroic BiFeO 3 undergoes a transition from a distorted spiral phase to a G-type antiferromagnet above a critical field H c that depends on the field orientation m . We show that H c ( m ) has a maximum when oriented along a cubic diagonal parallel to the electric polarization P and a minimum in the e... [Phys. Rev. B 88, 104419] Published Fri Sep 20, 2013

Schlagwort(e): Magnetism

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Modular invariance in the gapped XYZ spin-1/2 chain (2013)

Elisa Ercolessi, Stefano Evangelisti, Fabio Franchini, and Francesco Ravanini

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): Elisa Ercolessi, Stefano Evangelisti, Fabio Franchini, and Francesco Ravanini We show that the elliptic parametrization of the coupling constants of the quantum X Y Z spin chain can be analytically extended outside of their natural domain, to cover the whole phase diagram of the model, which is composed of 12 adjacent regions, related to one another by a spin rotation. This ext... [Phys. Rev. B 88, 104418] Published Fri Sep 20, 2013

Schlagwort(e): Magnetism

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Order-disorder quantum phase transition in the quasi-one-dimensional spin-1/2 collinear antiferromagnetic Heisenberg model (2013)

Sabrina Rufo, Griffith Mendonça, J. A. Plascak, and J. Ricardo de Sousa

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): Sabrina Rufo, Griffith Mendonça, J. A. Plascak, and J. Ricardo de Sousa The ground-state properties of the quasi-one-dimensional spin-1/2 antiferromagnetic Heisenberg model is investigated by using a variational method. Spins on chains along the x direction are antiferromagnetically coupled with exchange J 〉0, while spins between chains in the y direction are coupled ... [Phys. Rev. E 88, 034101] Published Fri Sep 20, 2013

Schlagwort(e): Statistical Physics

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Tight-binding model for exciton-polariton condensates in external potentials (2013)

Piotr Stępnicki and Michał Matuszewski

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Piotr Stępnicki and Michał Matuszewski We propose a mean-field model to describe exciton-polariton condensates in deep periodic external potentials. We derive a set of coupled discrete equations for both condensed and uncondensed components, with interaction and tunneling coefficients obtained within the tight-binding approximation. We u... [Phys. Rev. A 88, 033626] Published Mon Sep 23, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Zero sound in a two-dimensional dipolar Fermi gas (2013)

Zhen-Kai Lu, S. I. Matveenko, and G. V. Shlyapnikov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Zhen-Kai Lu, S. I. Matveenko, and G. V. Shlyapnikov We study zero sound in a weakly interacting two-dimensional (2D) gas of single-component fermionic dipoles (polar molecules or atoms with a large magnetic moment) tilted with respect to the plane of their translational motion. It is shown that the propagation of zero sound is provided by both mean-f... [Phys. Rev. A 88, 033625] Published Mon Sep 23, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Theory of asymmetric and negative differential magnon tunneling under temperature bias: Towards a spin Seebeck diode and transistor (2013)

Jie Ren and Jian-Xin Zhu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Jie Ren and Jian-Xin Zhu We study the nonequilibrium transport for the asymmetric and negative differential magnon tunneling driven by temperature bias. We demonstrate that the many-body magnon interaction that makes the magnonic spectrum temperature-dependent is the crucial factor for the emergence of rectification and neg... [Phys. Rev. B 88, 094427] Published Mon Sep 23, 2013

Schlagwort(e): Magnetism

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Structural control of magnetic anisotropy in a strain-driven multiferroic EuTiO_{3} thin film (2013)

X. Ke, T. Birol, R. Misra, J.-H. Lee, B. J. Kirby, D. G. Schlom, C. J. Fennie, and J. W. Freeland

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): X. Ke, T. Birol, R. Misra, J.-H. Lee, B. J. Kirby, D. G. Schlom, C. J. Fennie, and J. W. Freeland Octahedral distortion plays a key role in engineering the physical properties of heterostructures composed of perovskite oxides. We observe a strong in-plane uniaxial magnetic anisotropy in a strain-enabled multiferroic EuTiO 3 thin film epitaxially grown on a (110) o DyScO 3 substrate. First-principle... [Phys. Rev. B 88, 094434] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Phase diagram of the spin-1 Heisenberg model with three-site interactions on the square lattice (2013)

F. Michaud and F. Mila

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): F. Michaud and F. Mila We study the spin S =1 antiferromagnetic Heisenberg model on the square lattice with, in addition to the nearest-neighbor interaction, a three-site interaction of the form ( S i · S j )( S j · S k )+H.c. This interaction appears naturally in a strong coupling expansion of the two-orbital, half-filled Hubbard mod... [Phys. Rev. B 88, 094435] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Demixing in symmetric supersolid mixtures (2013)

Piyush Jain, Saverio Moroni, Massimo Boninsegni, and Lode Pollet

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Piyush Jain, Saverio Moroni, Massimo Boninsegni, and Lode Pollet The droplet crystal phase of a symmetric binary mixture of soft-core bosons is studied by computer simulation. At high temperature each droplet comprises on average equal numbers of particles of either component, but the two components demix below the supersolid transition temperature, i.e., droplet... [Phys. Rev. A 88, 033628] Published Thu Sep 26, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Nuclear magnetic resonance studies of pseudospin fluctuations in URu_{2}Si_{2} (2013)

K. R. Shirer, J. T. Haraldsen, A. P. Dioguardi, J. Crocker, N. ap; Roberts-Warren, A. C. Shockley, C.-H. Lin, D. M. Nisson, J. C. Cooley, M. Janoschek, K. Huang, N. Kanchanavatee, M. B. Maple, M. J. Graf, A. V. Balatsky, and N. J. Curro

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): K. R. Shirer, J. T. Haraldsen, A. P. Dioguardi, J. Crocker, N. apRoberts-Warren, A. C. Shockley, C.-H. Lin, D. M. Nisson, J. C. Cooley, M. Janoschek, K. Huang, N. Kanchanavatee, M. B. Maple, M. J. Graf, A. V. Balatsky, and N. J. Curro We report 29 Si nuclear magnetic resonance measurements in single crystals and aligned powders of URu 2 Si 2 in the hidden order and paramagnetic phases. The spin-lattice relaxation data reveal evidence of pseudospin fluctuations of U moments in the paramagnetic phase. We find evidence for partial suppr... [Phys. Rev. B 88, 094436] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Classification of spin-nematic squeezing in spin-1 collective atomic systems (2013)

Emi Yukawa, Masahito Ueda, and Kae Nemoto

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Emi Yukawa, Masahito Ueda, and Kae Nemoto In spin-1 collective atomic systems, the spin and nematic-tensor operators constitute the su(3) Lie algebra, whose su(2) subalgebras are shown to give two distinct classes of squeezing which are unitarily equivalent to spin squeezing and spin-nematic squeezing. We explicitly construct a unitary oper... [Phys. Rev. A 88, 033629] Published Thu Sep 26, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Chiral properties of hematite α-Fe_{2}O_{3} inferred from resonant Bragg diffraction using circularly polarized x rays (2013)

A. Rodríguez-Fernández, J. A. Blanco, S. W. Lovesey, V. Scagnoli, U. Staub, H. C. Walker, D. K. Shukla, and J. Strempfer

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): A. Rodríguez-Fernández, J. A. Blanco, S. W. Lovesey, V. Scagnoli, U. Staub, H. C. Walker, D. K. Shukla, and J. Strempfer Chiral properties of the two phases—collinear motif (below Morin transition temperature, T M ≈250 K) and canted motif (above T M )—of magnetically ordered hematite ( α -Fe 2 O 3 ) have been identified in single-crystal resonant x-ray Bragg diffraction using circular polarized incident x rays tuned near the ir... [Phys. Rev. B 88, 094437] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Spin-torque switching efficiency in CoFeB-MgO based tunnel junctions (2013)

J. Z. Sun, S. L. Brown, W. Chen, E. A. Delenia, M. C. Gaidis, J. Harms, G. Hu, Xin Jiang, R. Kilaru, W. Kula, G. Lauer, L. Q. Liu, S. Murthy, J. Nowak, E. J. O’Sullivan, S. S. P. Parkin, R. P. Robertazzi, P. M. Rice, G. Sandhu, T. Topuria, and D. C. Worledge

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): J. Z. Sun, S. L. Brown, W. Chen, E. A. Delenia, M. C. Gaidis, J. Harms, G. Hu, Xin Jiang, R. Kilaru, W. Kula, G. Lauer, L. Q. Liu, S. Murthy, J. Nowak, E. J. O’Sullivan, S. S. P. Parkin, R. P. Robertazzi, P. M. Rice, G. Sandhu, T. Topuria, and D. C. Worledge It is convenient to define the spin-torque switching efficiency in nanostructured magnetic tunnel junctions as the ratio between the free-layers thermal activation barrier height E b and the threshold switching current I c 0 . Recent device exploration has led to occasional observations of spin-torque i... [Phys. Rev. B 88, 104426] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Transport and collision dynamics in periodic asymmetric obstacle arrays: Rational design of microfluidic rare-cell immunocapture devices (2013)

Jason P. Gleghorn, James P. Smith, and Brian J. Kirby

American Physical Society (APS)

In: Physical Review E

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Beschreibung: Author(s): Jason P. Gleghorn, James P. Smith, and Brian J. Kirby Microfluidic obstacle arrays have been used in numerous applications, and their ability to sort particles or capture rare cells from complex samples has broad and impactful applications in biology and medicine. We have investigated the transport and collision dynamics of particles in periodic obstac... [Phys. Rev. E 88, 032136] Published Thu Sep 26, 2013

Schlagwort(e): Statistical Physics

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Transverse spin diffusion in strongly interacting Fermi gases (2013)

Tilman Enss

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): Tilman Enss We compute spin diffusion in a dilute Fermi gas at arbitrary temperature, polarization, and strong interaction in the normal phase using kinetic theory. While the longitudinal spin diffusivity D ∥ depends weakly on polarization and diverges for small temperatures, the transverse spin diffusivity D ⊥ h... [Phys. Rev. A 88, 033630] Published Fri Sep 27, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Magnetoelectric coupling in the Haldane spin-chain system Dy_{2}BaNiO_{5} (2013)

Kiran Singh, Tathamay Basu, S. Chowki, N. Mahapotra, Kartik K. Iyer, P. L. Paulose, and E. V. Sampathkumaran

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Kiran Singh, Tathamay Basu, S. Chowki, N. Mahapotra, Kartik K. Iyer, P. L. Paulose, and E. V. Sampathkumaran We report the results of various measurements, namely magnetization, complex dielectric permittivity, and electric polarization ( P ), on Dy 2 BaNiO 5 as a function of temperature ( T ) and magnetic field ( H ), apart from heat capacity ( C ), with the primary motivation of exploring the existence of magnetoel... [Phys. Rev. B 88, 094438] Published Fri Sep 27, 2013

Schlagwort(e): Magnetism

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Relativistic Langevin dynamics in expanding media (2013)

Min He, Hendrik van Hees, Pol B. Gossiaux, Rainer J. Fries, and Ralf Rapp

American Physical Society (APS)

In: Physical Review E

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Beschreibung: Author(s): Min He, Hendrik van Hees, Pol B. Gossiaux, Rainer J. Fries, and Ralf Rapp We study the consequences of different realizations of diffusion processes in relativistic Langevin simulations. We elaborate on the Ito-Stratonovich dilemma by showing how microscopically calculated transport coefficients as obtained from a Boltzmann–Fokker-Planck equation can be implemented to lea... [Phys. Rev. E 88, 032138] Published Fri Sep 27, 2013

Schlagwort(e): Statistical Physics

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Optimal and suboptimal quadratic forms for noncentered Gaussian processes (2013)

Denis S. Grebenkov

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): Denis S. Grebenkov Individual random trajectories of stochastic processes are often analyzed by using quadratic forms such as time averaged (TA) mean square displacement (MSD) or velocity auto-correlation function (VACF). The appropriate quadratic form is expected to have a narrow probability distribution in order to ... [Phys. Rev. E 88, 032140] Published Fri Sep 27, 2013

Schlagwort(e): Statistical Physics

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Modulated two-level system: Exact work statistics (2013)

Gatien Verley, Christian Van den Broeck, and Massimiliano Esposito

American Physical Society (APS)

In: Physical Review E

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Beschreibung: Author(s): Gatien Verley, Christian Van den Broeck, and Massimiliano Esposito We consider an open two-level system driven by a piecewise constant periodic field and described by a rate equation with Fermi, Bose, and Arrhenius rates, respectively. We derive an analytical expression for the generating function and large deviation function of the work performed by the field and ... [Phys. Rev. E 88, 032137] Published Fri Sep 27, 2013

Schlagwort(e): Statistical Physics

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Increasing thermal rectification: Effects of long-range interactions (2013)

Emmanuel Pereira and Ricardo R. Ávila

American Physical Society (APS)

In: Physical Review E

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Beschreibung: Author(s): Emmanuel Pereira and Ricardo R. Ávila In this paper, we study the effects of the interparticle interaction range on heat flow. We show that, by increasing the interaction range, we may amplify the thermal conductivity and even change the regime of heat transport. More importantly, considering a crucial problem of phononics, namely, the ... [Phys. Rev. E 88, 032139] Published Fri Sep 27, 2013

Schlagwort(e): Statistical Physics

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Self-consistent tight-binding description of Dirac points moving and merging in two-dimensional optical lattices (2013)

Julen Ibañez-Azpiroz, Asier Eiguren, Aitor Bergara, Giulio Pettini, and Michele Modugno

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Julen Ibañez-Azpiroz, Asier Eiguren, Aitor Bergara, Giulio Pettini, and Michele Modugno We present an accurate ab initio tight-binding model, capable of describing the dynamics of Dirac points in tunable honeycomb optical lattices following a recent experimental realization [ Tarruell et al. Nature (London) 483 302 (2012) ]. Our scheme is based on first-principle maximally localized Wa... [Phys. Rev. A 88, 033631] Published Mon Sep 30, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Itinerant electronic ferromagnetism in Sr_{2}ScO_{3}CoAs with largely spaced CoAs conduction layers (2013)

Hiroto Ohta, Daisuke Noguchi, Koichiro Nabetani, and Hiroko Aruga Katori

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Hiroto Ohta, Daisuke Noguchi, Koichiro Nabetani, and Hiroko Aruga Katori We studied magnetism of Sr 2 ScO 3 CoAs, a member of the group of layered compound with CoAs conducting layers, by using successfully synthesized polycrystalline sample. As a result of magnetic and electric resistivity measurements, Sr 2 ScO 3 CoAs was revealed to be an itinerant electronic ferromagnet with... [Phys. Rev. B 88, 094441] Published Mon Sep 30, 2013

Schlagwort(e): Magnetism

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Magnetocrystalline anisotropy and the magnetocaloric effect in Fe_{2}P (2013)

L. Caron, M. Hudl, V. Höglin, N. H. Dung, C. P. Gomez, M. Sahlberg, E. Brück, Y. Andersson, and P. Nordblad

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): L. Caron, M. Hudl, V. Höglin, N. H. Dung, C. P. Gomez, M. Sahlberg, E. Brück, Y. Andersson, and P. Nordblad Magnetic and magnetocaloric properties of high-purity, giant magnetocaloric polycrystalline and single-crystalline Fe 2 P are investigated. Fe 2 P displays a moderate magnetic entropy change, which spans over 70 K and the presence of strong magnetization anisotropy proves this system is not fully itiner... [Phys. Rev. B 88, 094440] Published Mon Sep 30, 2013

Schlagwort(e): Magnetism

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Criticality in alternating layered Ising models. I. Effects of connectivity and proximity (2013)

Helen Au-Yang and Michael E Fisher

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Helen Au-Yang and Michael E Fisher The specific heats of exactly solvable alternating layered planar Ising models with strips of width m 1 lattice spacings and “strong” couplings J 1 sandwiched between strips of width m 2 and “weak” coupling J 2 , have been studied numerically to investigate the effects of connectivity and proximity. We f... [Phys. Rev. E 88, 032147] Published Mon Sep 30, 2013

Schlagwort(e): Statistical Physics

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Criticality in alternating layered Ising models. II. Exact scaling theory (2013)

Helen Au-Yang

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Helen Au-Yang Part I of this article studied the specific heats of planar alternating layered Ising models with strips of strong coupling J 1 sandwiched between strips of weak coupling J 2 , to illustrate qualitatively the effects of connectivity, proximity, and enhancement in analogy to those seen in extensive expe... [Phys. Rev. E 88, 032148] Published Mon Sep 30, 2013

Schlagwort(e): Statistical Physics

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Magnetic ground state of the M_{n+1}AX_{n}-phase nitride Cr_{2}GaN (2013)

Z. Liu, T. Waki, Y. Tabata, K. Yuge, H. Nakamura, and I. Watanabe

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-02

Beschreibung: Author(s): Z. Liu, T. Waki, Y. Tabata, K. Yuge, H. Nakamura, and I. Watanabe Aiming to find magnetic states in the M n +1 A X n phases, we measured the magnetic susceptibility, the resistivity, and nuclear magnetic resonance of Cr 2 Ga X ( X =N and C). Zero-field and longitudinal-field muon spin relaxation experiments were also applied to Cr 2 GaN. A magnetic phase transition, most prob... [Phys. Rev. B 88, 134401] Published Tue Oct 01, 2013

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Wigner distribution functions for complex dynamical systems: The emergence of the Wigner-Boltzmann equation (2013)

Dries Sels and Fons Brosens

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-10-02

Beschreibung: Author(s): Dries Sels and Fons Brosens The equation of motion for the reduced Wigner function of a system coupled to an external quantum system is presented for the specific case when the external quantum system can be modeled as a set of harmonic oscillators. The result is derived from the Wigner function formulation of the Feynman-Vern... [Phys. Rev. E 88, 042101] Published Tue Oct 01, 2013

Schlagwort(e): Statistical Physics

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Robust perpendicular exchange coupling in an ultrathin CoO/PtFe double layer: Strain and spin orientation (2013)

Anne D. Lamirand, Márcio M. Soares, Aline Y. Ramos, Hélio C. N. Tolentino, Maurizio De Santis, Julio C. Cezar, Abner de Siervo, and Matthieu Jamet

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-03

Beschreibung: Author(s): Anne D. Lamirand, Márcio M. Soares, Aline Y. Ramos, Hélio C. N. Tolentino, Maurizio De Santis, Julio C. Cezar, Abner de Siervo, and Matthieu Jamet We report on the exchange coupling and magnetic properties of a strained ultrathin CoO/PtFe double layer with perpendicular magnetic anisotropy. The cobalt oxide growth by reactive molecular beam epitaxy on a Pt-terminated PtFe/Pt(001) surface gives rise to a hexagonal surface and a monoclinic disto... [Phys. Rev. B 88, 140401] Published Wed Oct 02, 2013

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Phase coexistence and magnetically tuneable polarization in cycloidal multiferroics (2013)

I. Fina, V. Skumryev, D. O’Flynn, G. Balakrishnan, and J. Fontcuberta

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): I. Fina, V. Skumryev, D. O’Flynn, G. Balakrishnan, and J. Fontcuberta In some magnetic ferroelectrics the polarization P direction can be selected by a magnetic field H . Here we show that in a (Y 1− x Sm x )MnO 3 single crystal, both the direction and the magnitude of P can be controlled solely by H . We argue that this remarkable dual control arises from both the phase coex... [Phys. Rev. B 88, 100403] Published Fri Sep 06, 2013

Schlagwort(e): Magnetism

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Consensus time and conformity in the adaptive voter model (2013)

Tim Rogers and Thilo Gross

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): Tim Rogers and Thilo Gross The adaptive voter model is a paradigmatic model in the study of opinion formation. Here we propose an extension for this model, in which conflicts are resolved by obtaining another opinion, and analytically study the time required for consensus to emerge. Our results shed light on the rich phenomen... [Phys. Rev. E 88, 030102] Published Fri Sep 06, 2013

Schlagwort(e): Statistical Physics

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Quantum spin-1 anisotropic ferromagnetic Heisenberg model in a crystal field: A variational approach (2013)

D. C. Carvalho, J. A. Plascak, and L. M. Castro

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): D. C. Carvalho, J. A. Plascak, and L. M. Castro A variational approach based on Bogoliubov inequality for the free energy is employed in order to treat the quantum spin-1 anisotropic ferromagnetic Heisenberg model in the presence of a crystal field. Within the Bogoliubov scheme an improved pair approximation has been used. The temperature-depende... [Phys. Rev. E 88, 032111] Published Fri Sep 06, 2013

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Collective modes in the anisotropic unitary Fermi gas and the inclusion of a backflow term (2013)

L. Salasnich, P. Comaron, M. Zambon, and F. Toigo

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-10

Beschreibung: Author(s): L. Salasnich, P. Comaron, M. Zambon, and F. Toigo We study the collective modes of the confined unitary Fermi gas under anisotropic harmonic confinement as a function of the number of atoms. We use the equations of extended superfluid hydrodynamics, which take into account a dispersive von Weizsäcker-like term [ C. F. von Weizsäcker Z. Phys. 96 43... [Phys. Rev. A 88, 033610] Published Mon Sep 09, 2013

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Collisional relaxation of two-dimensional self-gravitating systems (2013)

Bruno Marcos

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-10

Beschreibung: Author(s): Bruno Marcos Systems with long range interactions present generically the formation of quasistationary long-lived nonequilibrium states. These states relax to Boltzmann equilibrium following a dynamics which is not well understood. In this paper we study this process in two-dimensional inhomogeneous self-gravita... [Phys. Rev. E 88, 032112] Published Mon Sep 09, 2013

Schlagwort(e): Statistical Physics

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Microwave-induced excitations in the kagome system Pr_{3}Ga_{5}SiO_{14} (2013)

Sanhita Ghosh, Saiti Datta, Haidong Zhou, Michael Hoch, Christopher R. Wiebe, Pedro Schlottmann, and Stephen Hill

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-11

Beschreibung: Author(s): Sanhita Ghosh, Saiti Datta, Haidong Zhou, Michael Hoch, Christopher R. Wiebe, Pedro Schlottmann, and Stephen Hill Low-energy excitations in the rare earth kagome spin system Pr 3 Ga 5 SiO 14 (PGS) have been investigated using high-field electron spin resonance (ESR) techniques. Previous work has shown that PGS does not exhibit long-range magnetic order at temperatures down to 30 mK. The present low-temperature (1.3–... [Phys. Rev. B 88, 094414] Published Tue Sep 10, 2013

Schlagwort(e): Magnetism

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Landau levels in lattices with long-range hopping (2013)

Hakan Atakişi and M. Ö. Oktel

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-11

Beschreibung: Author(s): Hakan Atakişi and M. Ö. Oktel Landau levels (LLs) are broadened in the presence of a periodic potential, forming a barrier for accurate simulation of the fractional quantum Hall effect using cold atoms in optical lattices. Recently, it has been shown that the degeneracy of the lowest Landau level (LLL) can be restored in a tight... [Phys. Rev. A 88, 033612] Published Tue Sep 10, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Emerging spectra of singular correlation matrices under small power-map deformations (2013)

Vinayak, Rudi Schäfer, and Thomas H. Seligman

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-11

Beschreibung: Author(s): Vinayak, Rudi Schäfer, and Thomas H. Seligman Correlation matrices are a standard tool in the analysis of the time evolution of complex systems in general and financial markets in particular. Yet most analysis assume stationarity of the underlying time series. This tends to be an assumption of varying and often dubious validity. The validity of... [Phys. Rev. E 88, 032115] Published Tue Sep 10, 2013

Schlagwort(e): Statistical Physics

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Nonequilibrium identities and response theory for dissipative particles (2013)

Hisao Hayakawa and Michio Otsuki

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Hisao Hayakawa and Michio Otsuki We derive some nonequilibrium identities such as the integral fluctuation theorem and the Jarzynski equality starting from a nonequilibrium state for dissipative classical systems. Thanks to the existence of the integral fluctuation theorem we can naturally introduce an entropy-like quantity for dis... [Phys. Rev. E 88, 032117] Published Wed Sep 11, 2013

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Ergodic crossover in partially self-avoiding stochastic walks (2013)

Juliana M. Berbert, Rodrigo Silva González, and Alexandre Souto Martinez

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Juliana M. Berbert, Rodrigo Silva González, and Alexandre Souto Martinez Consider a one-dimensional environment with N randomly distributed sites. An agent explores this random medium moving deterministically with a spatial memory μ . A crossover from local to global exploration occurs in one dimension at a well-defined memory value μ 1 =log 2 N . In its stochastic version, th... [Phys. Rev. E 88, 032119] Published Wed Sep 11, 2013

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Vortex distribution in a confining potential (2013)

Matheus Girotto, Alexandre P. dos Santos, and Yan Levin

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Matheus Girotto, Alexandre P. dos Santos, and Yan Levin We study a model of interacting vortices in a type II superconductor. In the weak coupling limit, we constructed a mean-field theory which allows us to accurately calculate the vortex density distribution inside a confining potential. In the strong coupling limit, the correlations between the partic... [Phys. Rev. E 88, 032118] Published Wed Sep 11, 2013

Schlagwort(e): Statistical Physics

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Backscattering echo of correlated wave packets (2013)

Nicolas Cherroret and Dominique Delande

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-13

Beschreibung: Author(s): Nicolas Cherroret and Dominique Delande We present an analytical theory describing a phenomenon of enhanced backscattering corresponding to the spatial refocussing of a spreadout correlated wave packet due to a brief interaction with a disordered potential. Our theory is validated by numerical simulations and explains the physics observed... [Phys. Rev. A 88, 035602] Published Thu Sep 12, 2013

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Spin state and orbital ordering in CuCr_{2}O_{4} investigated by NMR (2013)

Euna Jo, Byeongki Kang, Changsoo Kim, Sangil Kwon, and Soonchil Lee

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Euna Jo, Byeongki Kang, Changsoo Kim, Sangil Kwon, and Soonchil Lee 63,65 Cu and 53 Cr nuclear magnetic resonance spectra for CuCr 2 O 4 were measured at various magnetic fields and temperatures. The microscopic evidence of orbital ordering in CuCr 2 O 4 was obtained from a dipolar hyperfine field, NQR, and magnetic anisotropy analysis of the linewidth broadening of the Cu ... [Phys. Rev. B 88, 094417] Published Thu Sep 12, 2013

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Tailoring magnetic properties of metallic thin films with quantum well states and external electric fields (2013)

T. R. Dasa, P. Ruiz-Díaz, O. O. Brovko, and V. S. Stepanyuk

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-13

Beschreibung: Author(s): T. R. Dasa, P. Ruiz-Díaz, O. O. Brovko, and V. S. Stepanyuk Thickness dependence of magnetic anisotropy energy (MAE) and spin polarization in Fe and Co multilayers on a Pt(001) substrate are investigated with ab initio techniques. As the thickness of the thin films is increased, an oscillatory behavior of the MAE of the systems is observed. For Fe multilayer... [Phys. Rev. B 88, 104409] Published Thu Sep 12, 2013

Schlagwort(e): Magnetism

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Induced magnetism versus Kondo screening in alternating Mott-metal layers (2013)

Aleksander Zujev and Pinaki Sengupta

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-13

Beschreibung: Author(s): Aleksander Zujev and Pinaki Sengupta We investigate the magnetic properties of a heterostructure comprised of alternating metallic and Mott insulating layers of fermions with varying interlayer hybridization. Results from large-scale quantum Monte Carlo simulations at half-filling show clear evidence of induced magnetism in the metalli... [Phys. Rev. B 88, 094415] Published Thu Sep 12, 2013

Schlagwort(e): Magnetism

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Binding carriers to a nonmagnetic impurity in a two-dimensional square Ising antiferromagnet (2013)

Hadi Ebrahimnejad and Mona Berciu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-13

Beschreibung: Author(s): Hadi Ebrahimnejad and Mona Berciu A hole in a two-dimensional Ising antiferromagnet was believed to be infinitely heavy due to the string of wrongly oriented spins it creates as it moves, which should trap it near its original location. Trugman showed that, in fact, the hole acquires a finite effective mass due to contributions from... [Phys. Rev. B 88, 104410] Published Thu Sep 12, 2013

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Influence of long-range interactions on charge ordering phenomena on a square lattice (2013)

Louk Rademaker, Yohanes Pramudya, Jan Zaanen, and Vladimir Dobrosavljević

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): Louk Rademaker, Yohanes Pramudya, Jan Zaanen, and Vladimir Dobrosavljević Usually complex charge ordering phenomena arise due to competing interactions. We have studied how such ordered patterns emerge from the frustration of a long-ranged interaction on a lattice. Using the lattice gas model on a square lattice with fixed particle density, we have identified several inte... [Phys. Rev. E 88, 032121] Published Fri Sep 13, 2013

Schlagwort(e): Statistical Physics

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Unusual temperature-dependent exchange interaction in GdFe_{2}Al_{10} in comparison with GdRu_{2}Al_{10} (2013)

M. Sera, H. Nohara, M. Nakamura, H. Tanida, T. Nishioka, and M. Matsumura

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): M. Sera, H. Nohara, M. Nakamura, H. Tanida, T. Nishioka, and M. Matsumura We investigated the magnetic properties of the antiferromagnetic (AFM) compound Gd T 2 Al 10 ( T =Ru and Fe). Although GdRu 2 Al 10 could be understood well as a simple AFM compound, the exchange interaction in GdFe 2 Al 10 is found to be greatly varied with temperature. The magnitude of the AFM exchange intera... [Phys. Rev. B 88, 100404] Published Fri Sep 13, 2013

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Control of logic gates by dichotomous noise in energetic and entropic systems (2013)

Moupriya Das and Deb Shankar Ray

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): Moupriya Das and Deb Shankar Ray We consider the stochastic response of a nonlinear dynamical system towards a combination of input signals. The response can assume binary values if the state of the system is considered to be the output and the system can make transitions between two states separated by an energetic or entropic bar... [Phys. Rev. E 88, 032122] Published Fri Sep 13, 2013

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Multiple phase transitions in CuO observed with thermal expansion (2013)

A. Rebello, Z. C. M. Winter, S. Viall, and J. J. Neumeier

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): A. Rebello, Z. C. M. Winter, S. Viall, and J. J. Neumeier High-resolution thermal-expansion measurements of single-crystalline CuO (tenorite) are reported for the temperature range 5〈 T 〈350 K. The data reveal three transitions ( T N 1 = 213 K, T N 2 = 229.2 K, and T N 3 = 229.8 K), which corroborate the recently proposed magnetic phase diagram [ Villarreal, ... [Phys. Rev. B 88, 094420] Published Mon Sep 16, 2013

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Influence of the magnetic material on tunneling magnetoresistance and spin-transfer torque in tunnel junctions: Ab initio studies (2013)

Christian Franz, Michael Czerner, and Christian Heiliger

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Christian Franz, Michael Czerner, and Christian Heiliger The dependence of tunneling magnetoresistance and spin-transfer torque in FeCo/MgO/FeCo tunnel junctions on the Co concentration and the bias voltage are investigated ab initio . We find that the tunneling magnetoresistance decreases with the Co concentration, in contradiction to previous calculation... [Phys. Rev. B 88, 094421] Published Mon Sep 16, 2013

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Spin-transfer torque and current-induced switching in metallic spin valves with perpendicular polarizers (2013)

Pavel Baláž, Maciej Zwierzycki, and Józef Barnaś

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Pavel Baláž, Maciej Zwierzycki, and Józef Barnaś We present a theoretical description of spin-transfer torque in a spin valve with perpendicularly magnetized polarizer. The polarizer consisting of several ultrathin layers is considered as a single interfacial magnetic scatterer between two nonmagnetic layers, and is included in the theory based on... [Phys. Rev. B 88, 094422] Published Mon Sep 16, 2013

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S=2 quasi-one-dimensional spin waves in CrCl_{2} (2013)

M. B. Stone, G. Ehlers, and G. E. Granroth

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): M. B. Stone, G. Ehlers, and G. E. Granroth We examine the magnetic excitation spectrum in the S =2 Heisenberg antiferromagnet CrCl 2 . Inelastic neutron scattering measurements on powder samples are able to determine the significant exchange interactions in this system. A large anisotropy gap is observed in the spectrum below the Néel temperatu... [Phys. Rev. B 88, 104413] Published Mon Sep 16, 2013

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Roton-assisted chiral p-wave superfluid in a quasi-two-dimensional dipolar Bose-Fermi quantum-gas mixture (2013)

Ben Kain and Hong Y. Ling

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Ben Kain and Hong Y. Ling The chiral p -wave ( p x ± i p y ) superfluid has attracted significant attention in recent years, mainly because its vortex core supports a Majorana fermion which, due to its non-Abelian statistics, can be explored for implementing topological quantum computation. Mixing dipolar bosons with fermions in qua... [Phys. Rev. A 88, 033616] Published Mon Sep 16, 2013

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Supersolid structure and excitation spectrum of soft-core bosons in three dimensions (2013)

Francesco Ancilotto, Maurizio Rossi, and Flavio Toigo

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Francesco Ancilotto, Maurizio Rossi, and Flavio Toigo By means of a mean-field method, we have studied the zero-temperature structure and excitation spectrum of a three-dimensional soft-core bosonic system for a value of the interaction strength that favors a crystal structure made of atomic nanoclusters arranged with fcc ordering. In addition to the l... [Phys. Rev. A 88, 033618] Published Mon Sep 16, 2013

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Arrow-arrow correlations for the six-vertex model (2013)

P. Falco

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): P. Falco The six-vertex model on a square lattice is “exactly solvable” because an exact formula for the free energy can be obtained by the Bethe ansatz. However, exact formulas for the correlations of local bulk observables, such as the orientation of the arrow at a given edge, are, in general, not availabl... [Phys. Rev. E 88, 030103] Published Mon Sep 16, 2013

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Influence of Cr doping on the magnetic structure of the FeAs-strips compound CaFe_{4}As_{3}: A single-crystal neutron diffraction study (2013)

P. Manuel, L. C. Chapon, G. Trimarchi, I. S. Todorov, D. Y. Chung, B. Ouladdiaf, M. J. Gutmann, A. J. Freeman, and M. G. Kanatzidis

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): P. Manuel, L. C. Chapon, G. Trimarchi, I. S. Todorov, D. Y. Chung, B. Ouladdiaf, M. J. Gutmann, A. J. Freeman, and M. G. Kanatzidis We have studied the magnetic structure of a Cr-doped iron-arsenide compound CaFe 4 As 3 by means of single crystal neutron diffraction. The neutron data reveal that below 90 K, an antiferromagnetic structure with propagation vector k =0 is adopted. Refinement of the magnetic structure using one of the m... [Phys. Rev. B 88, 104414] Published Tue Sep 17, 2013

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Momentum-dependent s-wave and d-wave interactions in atomic Bose-Einstein condensates (2013)

Moumita Gupta and Krishna Rai Dastidar

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Moumita Gupta and Krishna Rai Dastidar We investigate the role of momentum-dependent interactions to determine the ground-state properties in the Bose-Einstein condensate for large scattering lengths ( a ) such that k a ≥1, even for small momentum ( p ) where p = ℏ k and k is the wave number. The results for momentum-dependent and momentum-indep... [Phys. Rev. A 88, 033619] Published Tue Sep 17, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Thermodynamic curvature for attractive and repulsive intermolecular forces (2013)

Helge-Otmar May, Peter Mausbach, and George Ruppeiner

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Helge-Otmar May, Peter Mausbach, and George Ruppeiner The thermodynamic curvature scalar R for the Lennard-Jones system is evaluated in phase space, including vapor, liquid, and solid state. We paid special attention to the investigation of R along vapor-liquid, liquid-solid, and vapor-solid equilibria. Because R is a measure of interaction strength, w... [Phys. Rev. E 88, 032123] Published Tue Sep 17, 2013

Schlagwort(e): Statistical Physics

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Nanostripe of subwavelength width as a switchable semitransparent mirror for spin waves in a magnonic crystal (2013)

R. Huber, T. Schwarze, and D. Grundler

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): R. Huber, T. Schwarze, and D. Grundler Spin wave transmission experiments are performed on a one-dimensional magnonic crystal (MC) where an injection pad for domain walls reverses the magnetization M of selected nanostripes independently from the otherwise saturated MC. The MC consists of a periodic array of 255-nm-wide permalloy nanostr... [Phys. Rev. B 88, 100405] Published Wed Sep 18, 2013

Schlagwort(e): Magnetism

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Large spin pumping from epitaxial Y_{3}Fe_{5}O_{12} thin films to Pt and W layers (2013)

H. L. Wang, C. H. Du, Y. Pu, R. Adur, P. C. Hammel, and F. Y. Yang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): H. L. Wang, C. H. Du, Y. Pu, R. Adur, P. C. Hammel, and F. Y. Yang Epitaxial Y 3 Fe 5 O 12 thin films deposited by off-axis sputtering exhibit excellent crystalline quality enabling observation of large spin pumping signals in Pt/Y 3 Fe 5 O 12 and W/Y 3 Fe 5 O 12 bilayers driven by cavity ferromagnetic resonance. The inverse spin Hall voltages reach 2.10 and −5.26 mV in 5-mm-long... [Phys. Rev. B 88, 100406] Published Wed Sep 18, 2013

Schlagwort(e): Magnetism

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Nonequilibrium heterogeneous catalysis in the long mean-free-path regime (2013)

D. P. Sheehan

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): D. P. Sheehan It is shown that a standard principle of traditional catalysis—that a catalyst does not alter the final thermodynamic equilibrium of a reaction—can fail in low-pressure, heterogeneous gas-surface reactions. Kinetic theory for this epicatalysis is presented, and two well-documented experimental examp... [Phys. Rev. E 88, 032125] Published Wed Sep 18, 2013

Schlagwort(e): Statistical Physics

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Weak ferromagnetism and domain effects in multiferroic LiNbO_{3}-type MnTiO_{3}-II (2013)

Angel M. Arévalo-López and J. Paul Attfield

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): Angel M. Arévalo-López and J. Paul Attfield Magnetic order consistent with multiferroism has been observed in the acentric LiNbO 3 -type, high pressure form II of MnTiO 3 using neutron diffraction and magnetization measurements. Spin order below the 28 K magnetic transition has propagation vector (0 0 0), and spins lie in the a b plane. Represent... [Phys. Rev. B 88, 104416] Published Wed Sep 18, 2013

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Fence-sitters protect cooperation in complex networks (2013)

Yichao Zhang, M. A. Aziz-Alaoui, Cyrille Bertelle, Shi Zhou, and Wenting Wang

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): Yichao Zhang, M. A. Aziz-Alaoui, Cyrille Bertelle, Shi Zhou, and Wenting Wang Evolutionary game theory is one of the key paradigms behind many scientific disciplines from science to engineering. In complex networks, because of the difficulty of formulating the replicator dynamics, most of the previous studies are confined to a numerical level. In this paper, we introduce a ve... [Phys. Rev. E 88, 032127] Published Wed Sep 18, 2013

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Theta-point polymers in the plane and Schramm-Loewner evolution (2013)

M. Gherardi

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): M. Gherardi We study the connection between polymers at the θ temperature on the lattice and Schramm-Loewner chains with constant step length in the continuum. The second of these realize a useful algorithm for the exact sampling of tricritical polymers, where finite-chain effects are excluded. The driving func... [Phys. Rev. E 88, 032128] Published Wed Sep 18, 2013

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Excitation spectrum of a toroidal spin-1 Bose-Einstein condensate (2013)

H. Mäkelä and E. Lundh

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): H. Mäkelä and E. Lundh We calculate analytically the Bogoliubov excitation spectrum of a toroidal spin-1 Bose-Einstein condensate that is subjected to a homogeneous magnetic field and contains vortices with arbitrary winding numbers in the m F =±1 components of the hyperfine spin. We show that a rotonlike spectrum can be ob... [Phys. Rev. A 88, 033622] Published Thu Sep 19, 2013

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Second harmonic generation in magnetic nanoparticles with vortex magnetic state (2013)

V. L. Krutyanskiy, I. A. Kolmychek, B. A. Gribkov, E. A. Karashtin, E. V. Skorohodov, and T. V. Murzina

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): V. L. Krutyanskiy, I. A. Kolmychek, B. A. Gribkov, E. A. Karashtin, E. V. Skorohodov, and T. V. Murzina Nonlinear optical properties of a regular array of triangular-shaped vortex magnetic nanoparticles is studied using the optical second harmonic generation (SHG) technique. We demonstrate that the SHG azimuthal anisotropy is consistent with the 3 m symmetry of individual Co nanodots placed in a square... [Phys. Rev. B 88, 094424] Published Thu Sep 19, 2013

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First-order phase transition and anomalous hysteresis of Bose gases in optical lattices (2013)

Daisuke Yamamoto, Takeshi Ozaki, Carlos A. R. Sá de Melo, and Ippei Danshita

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): Daisuke Yamamoto, Takeshi Ozaki, Carlos A. R. Sá de Melo, and Ippei Danshita We study the first-order quantum phase transitions of Bose gases in optical lattices. A special emphasis is placed on an anomalous hysteresis behavior, in which the phase transition occurs in a unidirectional way and a hysteresis loop does not form. We first revisit the hardcore Bose-Hubbard model w... [Phys. Rev. A 88, 033624] Published Fri Sep 20, 2013

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Frozen into stripes: Fate of the critical Ising model after a quench (2013)

T. Blanchard and M. Picco

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): T. Blanchard and M. Picco In this article we study numerically the final state of the two-dimensional ferromagnetic critical Ising model after a quench to zero temperature. Beginning from equilibrium at T c , the system can be blocked in a variety of infinitely long lived stripe states in addition to the ground state. Similar ... [Phys. Rev. E 88, 032131] Published Fri Sep 20, 2013

Schlagwort(e): Statistical Physics

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Monopole-based formalism for the diagonal magnetoelectric response (2013)

Nicola A. Spaldin, Michael Fechner, Eric Bousquet, Alexander Balatsky, and Lars Nordström

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Nicola A. Spaldin, Michael Fechner, Eric Bousquet, Alexander Balatsky, and Lars Nordström We develop the formalism of the macroscopic monopolization—that is, the magnetoelectric monopole moment per unit volume—in periodic solids, and discuss its relationship to the magnetoelectric effect. For the series of lithium transition metal phosphate compounds, we use first-principles density func... [Phys. Rev. B 88, 094429] Published Mon Sep 23, 2013

Schlagwort(e): Magnetism

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Excited-state quantum phase transitions in Dicke superradiance models (2013)

Tobias Brandes

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Tobias Brandes We derive analytical results for various quantities related to the excited-state quantum phase transitions in a class of Dicke superradiance models in the semiclassical limit. Based on a calculation of a partition sum restricted to Dicke states, we discuss the singular behavior of the derivative of ... [Phys. Rev. E 88, 032133] Published Mon Sep 23, 2013

Schlagwort(e): Statistical Physics

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Self-sustained clusters and ergodicity breaking in spin models (2013)

Chi Ho Yeung and David Saad

American Physical Society (APS)

In: Physical Review E

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Chi Ho Yeung and David Saad Self-sustained spin clusters are analytically linked to ergodicity breaking in fully connected Ising and Sherrington-Kirkpatick (SK) models, relating the less understood spin space to the well understood state space. This correspondence is established through the absence of clusters in the paramagne... [Phys. Rev. E 88, 032132] Published Mon Sep 23, 2013

Schlagwort(e): Statistical Physics

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Absence of damping of low-energy excitations in a quasi-two-dimensional dipolar Bose gas (2013)

Stefan S. Natu and S. Das Sarma

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-26

Beschreibung: Author(s): Stefan S. Natu and S. Das Sarma We develop a theory of damping of low-energy, collective excitations in a quasi-two-dimensional, homogenous, dipolar Bose gas at zero temperature, via processes whereby an excitation decays into two excitations with lower energy. We find that owing to the nature of the low-energy spectrum of a quasi... [Phys. Rev. A 88, 031604] Published Wed Sep 25, 2013

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Compact atomic gravimeter based on a pulsed and accelerated optical lattice (2013)

Manuel Andia, Raphaël Jannin, François Nez, François Biraben, Saïda Guellati-Khélifa, and Pierre Cladé

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-26

Beschreibung: Author(s): Manuel Andia, Raphaël Jannin, François Nez, François Biraben, Saïda Guellati-Khélifa, and Pierre Cladé We present a scheme of a compact atomic gravimeter based on atom interferometry. Atoms are maintained against gravity using a sequence of coherent accelerations performed by the Bloch oscillations technique. We demonstrate a sensitivity of 4.8×10 −8 with an integration time of 4 min. Combining this m... [Phys. Rev. A 88, 031605] Published Wed Sep 25, 2013

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Structural, electronic, and magnetic properties of the europium chalcogenides: A hybrid-functional DFT study (2013)

Martin Schlipf, Markus Betzinger, Marjana Ležaić, Christoph Friedrich, and Stefan Blügel

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-26

Beschreibung: Author(s): Martin Schlipf, Markus Betzinger, Marjana Ležaić, Christoph Friedrich, and Stefan Blügel We analyze the structural, electronic, and magnetic properties of the europium chalcogenide series Eu X ( X =O, S, Se, and Te) using density-functional theory (DFT). To describe the localized 4 f states of Eu, we utilize the parameter-free PBE0 and HSE hybrid functionals and found a systematic qualitati... [Phys. Rev. B 88, 094433] Published Wed Sep 25, 2013

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Dynamical exchange interaction from time-dependent spin density functional theory (2013)

Maria Stamenova and Stefano Sanvito

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-26

Beschreibung: Author(s): Maria Stamenova and Stefano Sanvito We report on ab initio time-dependent spin-dynamics simulations for a two-center magnetic molecular complex within the framework of the time-dependent noncollinear spin-density functional theory. In particular, we discuss how the dynamical behavior of the ab initio spin-density in the time domain ca... [Phys. Rev. B 88, 104423] Published Wed Sep 25, 2013

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Interplay between surface anisotropy and dipolar interactions in an assembly of nanomagnets (2013)

Z. Sabsabi, F. Vernay, O. Iglesias, and H. Kachkachi

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-26

Beschreibung: Author(s): Z. Sabsabi, F. Vernay, O. Iglesias, and H. Kachkachi We study the interplay between the effects of surface anisotropy and dipolar interactions in monodisperse assemblies of nanomagnets with oriented anisotropy. We derive asymptotic formulas for the assembly magnetization, taking into account temperature, applied field, core and surface anisotropy, and... [Phys. Rev. B 88, 104424] Published Wed Sep 25, 2013

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Large Seebeck magnetic anisotropy in thin Co films embedded in Cu determined by ab initio investigations (2013)

Voicu Popescu and Peter Kratzer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-26

Beschreibung: Author(s): Voicu Popescu and Peter Kratzer The longitudinal thermopower of a Cu/Co/Cu trilayer system exhibits an oscillatory dependence on the thickness of the Co layer, a behavior related to the formation of quantum well states in the minority spin channel. In addition, it is found to be very sensitive to a switching between an in-plane an... [Phys. Rev. B 88, 104425] Published Wed Sep 25, 2013

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Self-trapping in the two-dimensional Bose-Hubbard model (2013)

Andrew Jreissaty, Juan Carrasquilla, and Marcos Rigol

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Andrew Jreissaty, Juan Carrasquilla, and Marcos Rigol We study the expansion of harmonically trapped bosons in a two-dimensional lattice after suddenly turning off the confining potential. We show that, in the presence of multiple occupancies per lattice site and strong interactions, the system exhibits a clear dynamical separation into slowly and rapi... [Phys. Rev. A 88, 031606] Published Mon Sep 30, 2013

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Response to a twist in systems with Z_{p} symmetry: The two-dimensional p-state clock model (2013)

Yuta Kumano, Koji Hukushima, Yusuke Tomita, and Masaki Oshikawa

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Yuta Kumano, Koji Hukushima, Yusuke Tomita, and Masaki Oshikawa We study response to a twist in the two-dimensional p -state clock model, which has the discrete Z p symmetry. The response is measured in terms of helicity modulus, which is usually defined with respect to an infinitesimal twist. However, we demonstrate that such a definition is inappropriate for the... [Phys. Rev. B 88, 104427] Published Mon Sep 30, 2013

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Spin torque in magnetic tunnel junctions with asymmetric barriers (2013)

Alan Kalitsov, Whasington Silvestre, Mairbek Chshiev, and Julian P. Velev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Alan Kalitsov, Whasington Silvestre, Mairbek Chshiev, and Julian P. Velev We derive expressions for both parallel and perpendicular components of spin transfer torque (STT) in magnetic tunnel junctions (MTJs), which have several important advantages over the currently available expressions: First they are derived in a more realistic approximation, resulting in excellent a... [Phys. Rev. B 88, 104430] Published Mon Sep 30, 2013

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Interlayer coupling in spin valves studied by broadband ferromagnetic resonance (2013)

D. E. Gonzalez-Chavez, R. Dutra, W. O. Rosa, T. L. Marcondes, A. Mello, and R. L. Sommer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): D. E. Gonzalez-Chavez, R. Dutra, W. O. Rosa, T. L. Marcondes, A. Mello, and R. L. Sommer The magnetization dynamics of coupled and uncoupled spin valves with the structure NiFe (20 nm)/Cu( t Cu )/NiFe (20 nm)/IrMn (10 nm) is probed by broadband ferromagnetic resonance absorption measurements. The coupling intensity between the free and the pinned layers is tailored by varying the Cu thickn... [Phys. Rev. B 88, 104431] Published Mon Sep 30, 2013

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Universal corrections to the entanglement entropy in gapped quantum spin chains: A numerical study (2013)

Emanuele Levi, Olalla A. Castro-Alvaredo, and Benjamin Doyon

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Emanuele Levi, Olalla A. Castro-Alvaredo, and Benjamin Doyon We carry out a numerical study of the bipartite entanglement entropy in the gapped regime of two paradigmatic quantum spin chain models: the Ising chain in an external magnetic field and the antiferromagnetic XXZ model. The universal scaling limit of these models is described by the massive Ising fi... [Phys. Rev. B 88, 094439] Published Mon Sep 30, 2013

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Modification of magnetic anisotropy through 3d-4f coupling in La_{0.75}Pr_{0.25}Co_{2}P_{2} (2013)

Kirill Kovnir, Corey M. Thompson, V. Ovidiu Garlea, Daniel Haskel, Anatolii A. Polyanskii, Haidong Zhou, and Michael Shatruk

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Kirill Kovnir, Corey M. Thompson, V. Ovidiu Garlea, Daniel Haskel, Anatolii A. Polyanskii, Haidong Zhou, and Michael Shatruk Magnetic behavior of La 0.75 Pr 0.25 Co 2 P 2 was investigated by a combination of magnetic measurements, magneto-optical imaging, neutron diffraction, and x-ray absorption spectroscopy, including x-ray magnetic circular dichroism. The material crystallizes in the ThCr 2 Si 2 structure type and exhibits three... [Phys. Rev. B 88, 104429] Published Mon Sep 30, 2013

Schlagwort(e): Magnetism

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Competition between spin-orbit coupling and magnetic exchange splitting in Ca_{2}RuO_{4} (2013)

Guo-Qiang Liu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Guo-Qiang Liu The ferromagnetic phase of Ca 2 RuO 4 has been puzzling because the observed magnetic moment m ≈ 0.4 μ B /Ru is surprisingly small, compared with the predicted 2 μ B /Ru. This discrepancy is resolved by considering the interplay of the spin-orbit coupling and Coulomb repulsion, which results in a large enhan... [Phys. Rev. B 88, 104428] Published Mon Sep 30, 2013

Schlagwort(e): Magnetism

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Thema: Physik

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