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Site dependence of the Kondo scale in CePd_{1−x} Rh_{x} due to Pd-Rh disorder (2015)

U. Stockert, S. Hartmann, M. Deppe, N. Caroca-Canales, J. G. Sereni, C. Geibel, and F. Steglich

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): U. Stockert, S. Hartmann, M. Deppe, N. Caroca-Canales, J. G. Sereni, C. Geibel, and F. Steglich We present measurements of the thermopower S ( T ) on CePd 1 − x Rh x between 2 K and 300 K. For low Rh content, the system behaves as a ferromagnetic Kondo system with a Curie temperature T C of about 6 K, a Kondo scale smaller than T C , and an overall crystal electric field splitting of 210 K. As the Rh con… [Phys. Rev. B 92, 054415] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Torsion-induced effects in magnetic nanowires (2015)

Denis D. Sheka, Volodymyr P. Kravchuk, Kostiantyn V. Yershov, and Yuri Gaididei

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Denis D. Sheka, Volodymyr P. Kravchuk, Kostiantyn V. Yershov, and Yuri Gaididei A magnetic helix wire is one of the simplest magnetic systems which manifests properties of both curvature and torsion. Possible equilibrium magnetization states in the helix wire with different anisotropy directions are studied theoretically. There exist two equilibrium states in the helix wire wit… [Phys. Rev. B 92, 054417] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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Thema: Physik

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Exchange bias effect in Au-Fe_{3} O_{4} dumbbell nanoparticles induced by the charge transfer from gold (2015)

Mikhail Feygenson, John C. Bauer, Zheng Gai, Carlos Marques, Meigan C. Aronson, Xiaowei Teng, Dong Su, Vesna Stanic, Volker S. Urban, Kevin A. Beyer, and Sheng Dai

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Mikhail Feygenson, John C. Bauer, Zheng Gai, Carlos Marques, Meigan C. Aronson, Xiaowei Teng, Dong Su, Vesna Stanic, Volker S. Urban, Kevin A. Beyer, and Sheng Dai We have studied the origin of the exchange bias effect in the Au-Fe 3 O 4 dumbbell nanoparticles in two samples with different sizes of the Au seed nanoparticles (4.1 and 2.7 nm) and same size of Fe 3 O 4 nanoparticles (9.8 nm). The magnetization, small-angle neutron-scattering, synchrotron x-ray diffract… [Phys. Rev. B 92, 054416] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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Thema: Physik

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Large perpendicular magnetic anisotropy in magnetostrictive Fe_{1−x} Ga_{x} thin films (2015)

M. Barturen, J. Milano, M. Vásquez-Mansilla, C. Helman, M. A. Barral, A. M. Llois, M. Eddrief, and M. Marangolo

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): M. Barturen, J. Milano, M. Vásquez-Mansilla, C. Helman, M. A. Barral, A. M. Llois, M. Eddrief, and M. Marangolo In this work we report the appearance of a large perpendicular magnetic anisotropy (PMA) in Fe 1 − x Ga x thin films grown onto ZnSe/GaAs(001). This arising anisotropy is related to the tetragonal metastable phase in as-grown samples recently reported [M. Eddrief et al. , Phys. Rev. B 84 , 161410 (2011) ].… [Phys. Rev. B 92, 054418] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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Thema: Physik

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5

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Spin waves in one-dimensional bicomponent magnonic quasicrystals (2015)

J. Rychły, J. W. Kłos, M. Mruczkiewicz, and M. Krawczyk

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): J. Rychły, J. W. Kłos, M. Mruczkiewicz, and M. Krawczyk We studied a finite Fibonacci sequence of Co and Py stripes aligned side by side and in direct contact with each other. Calculations based on a continuous model, including exchange and dipole interactions, were performed for structures feasible for fabrication and characterization of the main proper… [Phys. Rev. B 92, 054414] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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6

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Magnetization dynamics of coupled ferromagnetic disks (2015)

Olle Heinonen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Olle Heinonen The magnetization configuration in two stacked micron-size ferromagnetic disks can assume different equilibrium states depending on the interfacial coupling between the disks. Here I examine the magnetization dynamics in response to an out-of-plane field pulse for different equilibrium states. For a… [Phys. Rev. B 92, 054420] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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7

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Anharmonic phonon quasiparticle theory of zero-point and thermal shifts in insulators: Heat capacity, bulk modulus, and thermal expansion (2015)

Philip B. Allen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Philip B. Allen The quasiharmonic (QH) approximation uses harmonic vibrational frequencies ω Q , H ( V ) computed at volumes V near V 0 where the Born-Oppenheimer (BO) energy E el ( V ) is minimum. When this is used in the harmonic free energy, QH approximation gives a good zeroth order theory of thermal expansion and first-o… [Phys. Rev. B 92, 064106] Published Mon Aug 10, 2015

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

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8

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Single-photon level study of microwave properties of lithium niobate at millikelvin temperatures (2015)

Maxim Goryachev, Nikita Kostylev, and Michael E. Tobar

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Maxim Goryachev, Nikita Kostylev, and Michael E. Tobar The properties of doped and natural impurities in lithium niobate single crystals are studied using the whispering gallery mode method at low temperatures as a function of magnetic field. The study reveals considerable coupling of microwave photon modes to the Fe 3 + spin ensemble in iron-doped and no… [Phys. Rev. B 92, 060406(R)] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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9

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Critical suppression of spin Seebeck effect by magnetic fields (2015)

Takashi Kikkawa, Ken-ichi Uchida, Shunsuke Daimon, Zhiyong Qiu, Yuki Shiomi, and Eiji Saitoh

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Takashi Kikkawa, Ken-ichi Uchida, Shunsuke Daimon, Zhiyong Qiu, Yuki Shiomi, and Eiji Saitoh The longitudinal spin Seebeck effect (LSSE) in Pt / Y 3 Fe 5 O 12 ( YIG ) junction systems has been investigated at various magnetic fields and temperatures. We found that the LSSE voltage in a Pt/YIG-slab system is suppressed by applying high magnetic fields and this suppression is critically enhanced at low… [Phys. Rev. B 92, 064413] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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10

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Skyrmion dynamics in chiral ferromagnets (2015)

Stavros Komineas and Nikos Papanicolaou

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Stavros Komineas and Nikos Papanicolaou We study the dynamics of skyrmions in Dzyaloshinskii-Moriya materials with easy-axis anisotropy. An important link between topology and dynamics is established through the construction of unambiguous conservation laws obtained earlier in connection with magnetic bubbles and vortices. In particular, … [Phys. Rev. B 92, 064412] Published Mon Aug 10, 2015

Schlagwort(e): Magnetism

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