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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

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

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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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Thema: Physik

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13

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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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Thema: Physik

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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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Thema: Physik

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15

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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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Shaping frequency-entangled qudits (2013)

Christof Bernhard, Bänz Bessire, Thomas Feurer, and André Stefanov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Christof Bernhard, Bänz Bessire, Thomas Feurer, and André Stefanov We demonstrate the creation, characterization, and manipulation of frequency-entangled qudits by shaping the energy spectrum of entangled photons. The generation of maximally entangled qudit states is verified up to dimension d =4 through tomographic quantum-state reconstruction. Subsequently, we mea... [Phys. Rev. A 88, 032322] Published Mon Sep 23, 2013

Schlagwort(e): Quantum information

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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17

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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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18

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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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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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