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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

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Quantum search with interacting Bose-Einstein condensates (2013)

Mahdi Ebrahimi Kahou and David L. Feder

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Mahdi Ebrahimi Kahou and David L. Feder One approach to the development of quantum search algorithms is the quantum walk. A spatial search can be effected by the continuous-time evolution of a single quantum particle on a graph containing a marked site. In many physical implementations, however, one might expect to have multiple particles... [Phys. Rev. A 88, 032310] Published Wed Sep 11, 2013

Schlagwort(e): Quantum information

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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3

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Parrondo's paradox and superactivation of classical and quantum capacity of communication channels with memory (2013)

Sergii Strelchuk

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Sergii Strelchuk There exist memoryless zero-capacity quantum channels that when used jointly result in a channel with positive capacity. This phenomenon is called superactivation. Making use of Parrondo's paradox, we exhibit examples of the superactivation-like effect for the capacity of classical communication cha... [Phys. Rev. A 88, 032311] Published Wed Sep 11, 2013

Schlagwort(e): Quantum information

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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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

Print ISSN: 1539-3755

Digitale ISSN: 1550-2376

Thema: Physik

Publiziert von American Physical Society (APS)

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5

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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

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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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

Print ISSN: 1098-0121

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Thema: Physik

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7

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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

Print ISSN: 1098-0121

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Thema: Physik

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8

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Global properties of K hindrance probed by the γ decay of the warm rotating ^{174}W nucleus (2013)

V. Vandone et al.

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): V. Vandone et al. The K hindrance to the γ decay is studied in the warm rotating 174 W nucleus, focusing on the weakening of the selection rules of the K quantum number with increasing excitation energy. 174 W was populated by the fusion reaction of 50 Ti (at 217 MeV) on a 128 Te target, and its γ decay was detected by t... [Phys. Rev. C 88, 034312] Published Fri Sep 13, 2013

Schlagwort(e): Nuclear Structure

Print ISSN: 0556-2813

Digitale ISSN: 1089-490X

Thema: Physik

Publiziert von American Physical Society (APS)

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9

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Block entropy for Kitaev-type spin chains in a transverse field (2013)

V. Subrahmanyam

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): V. Subrahmanyam Block entanglement entropy in the ground state of a quantum spin chain is investigated. The spins have Kitaev-type nearest-neighbor interaction, of strength J x or J y , through either x or y components of the spins on alternating bonds, along with a transverse magnetic field h . An exact solution is ob... [Phys. Rev. A 88, 032315] Published Mon Sep 16, 2013

Schlagwort(e): Quantum information

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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Bipartite entanglement-annihilating maps: Necessary and sufficient conditions (2013)

Sergey N. Filippov and Mário Ziman

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Sergey N. Filippov and Mário Ziman We fully characterize bipartite entanglement-annihilating (EA) channels that destroy entanglement of any state shared by subsystems and, thus, should be avoided in any entanglement-enabled experiment. Our approach relies on extending the problem to EA positive maps, the cone of which remains invaria... [Phys. Rev. A 88, 032316] Published Mon Sep 16, 2013

Schlagwort(e): Quantum information

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Digitale ISSN: 1094-1622

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