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1

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Helical spin waves, magnetic order, and fluctuations in the langasite compound Ba_{3} NbFe_{3} Si_{2} O_{14} (2011)

C. Stock, L. C. Chapon, A. Schneidewind, Y. Su, P. G. Radaelli, D. F. McMorrow, A. Bombardi, N. Lee, and S.-W. Cheong

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-03-31

Beschreibung: Author(s): C. Stock, L. C. Chapon, A. Schneidewind, Y. Su, P. G. Radaelli, D. F. McMorrow, A. Bombardi, N. Lee, and S.-W. Cheong We have investigated spin fluctuations in the langasite compound Ba_{3} NbFe_{3} Si_{2} O_{14} both in the ordered state and as a function of temperature. The low-temperature magnetic structure is defined by a spiral phase characterized by magnetic Bragg peaks at q⃗=(0,0,τ~1/7) onset at T_{N} =27... [Phys. Rev. B 83, 104426] Published Wed Mar 30, 2011

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Noncollinear spin-density-wave antiferromagnetism in FeAs (2011)

E. E. Rodriguez, C. Stock, K. L. Krycka, C. F. Majkrzak, P. Zajdel, K. Kirshenbaum, N. P. Butch, S. R. Saha, J. Paglione, and M. A. Green

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-04-29

Beschreibung: Author(s): E. E. Rodriguez, C. Stock, K. L. Krycka, C. F. Majkrzak, P. Zajdel, K. Kirshenbaum, N. P. Butch, S. R. Saha, J. Paglione, and M. A. Green The nature of the magnetism in the simplest iron arsenide is of fundamental importance in understanding the interplay between localized and itinerant magnetism and superconductivity. We present the magnetic structure of the itinerant monoarsenide FeAs with the B31 structure. Powder neutron diffracti... [Phys. Rev. B 83, 134438] Published Thu Apr 28, 2011

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

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Thema: Physik

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Weak spin interactions in Mott insulating La2O2Fe2OSe2 (2014)

E. E. McCabe, C. Stock, E. E. Rodriguez, A. S. Wills, J. W. Taylor, and J. S. O. Evans

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-03-11

Beschreibung: Author(s): E. E. McCabe, C. Stock, E. E. Rodriguez, A. S. Wills, J. W. Taylor, and J. S. O. Evans Identifying and characterizing the parent phases of iron-based superconductors is an important step towards understanding the mechanism for their high-temperature superconductivity. We present an investigation into the magnetic interactions in the Mott insulator La2O2Fe2OSe2. This iron oxyselenide a... [Phys. Rev. B 89, 100402] Published Mon Mar 10, 2014

Schlagwort(e): Magnetism

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Thema: Physik

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Quantum gapped spin excitations in the S=3/2 zigzag ladder compound β-CaCr_{2}O_{4} (2011)

F. Damay, C. Martin, V. Hardy, A. Maignan, C. Stock, and S. Petit

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-07-09

Beschreibung: Author(s): F. Damay, C. Martin, V. Hardy, A. Maignan, C. Stock, and S. Petit We report on the spin dynamics in antiferromagnetic ( T N =21 K) chromium oxide β -CaCr 2 O 4 , which has been proposed recently as a good experimental realization of a spin- 3/2 strongly frustrated zigzag ladder. Inelastic neutron-scattering experiments evidence unconventional magnetic excitations, reminisc... [Phys. Rev. B 84, 020402] Published Fri Jul 08, 2011

Schlagwort(e): Magnetism

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Thema: Physik

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5

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Magnetic-crystallographic phase diagram of the superconducting parent compound Fe_{1+x}Te (2011)

E. E. Rodriguez, C. Stock, P. Zajdel, K. L. Krycka, C. F. Majkrzak, P. Zavalij, and M. A. Green

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-08-06

Beschreibung: Author(s): E. E. Rodriguez, C. Stock, P. Zajdel, K. L. Krycka, C. F. Majkrzak, P. Zavalij, and M. A. Green Through neutron diffraction experiments, including spin-polarized measurements, we find a collinear incommensurate spin-density wave with propagation vector k = [ 0.4481(4) 0 1/2 ] at base temperature in the superconducting parent compound Fe 1+ x Te. This critical concentration of interstitial iron cor... [Phys. Rev. B 84, 064403] Published Fri Aug 05, 2011

Schlagwort(e): Magnetism

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6

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Excitations in the quantum paramagnetic phase of the quasi-one-dimensional Ising magnet CoNb2O6 in a transverse field: Geometric frustration and quantum renormalization effects (2014)

I. Cabrera, J. D. Thompson, R. Coldea, D. Prabhakaran, R. I. Bewley, T. Guidi, J. A. Rodriguez-Rivera, and C. Stock

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-07-16

Beschreibung: Author(s): I. Cabrera, J. D. Thompson, R. Coldea, D. Prabhakaran, R. I. Bewley, T. Guidi, J. A. Rodriguez-Rivera, and C. Stock The quasi-one-dimensional (1D) Ising ferromagnet CoNb2O6 has recently been driven via applied transverse magnetic fields through a continuous quantum phase transition from spontaneous magnetic order to a quantum paramagnet, and dramatic changes were observed in the spin dynamics, characteristic of w... [Phys. Rev. B 90, 014418] Published Tue Jul 15, 2014

Schlagwort(e): Magnetism

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Thema: Physik

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7

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Thermal evolution of the full three-dimensional magnetic excitations in the multiferroic BiFeO_{3} (2012)

Zhijun Xu, Jinsheng Wen, Tom Berlijn, Peter M. Gehring, Christopher Stock, M. B. Stone, Wei Ku, Genda Gu, Stephen M. Shapiro, R. J. Birgeneau, and Guangyong Xu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2012-11-22

Beschreibung: Author(s): Zhijun Xu, Jinsheng Wen, Tom Berlijn, Peter M. Gehring, Christopher Stock, M. B. Stone, Wei Ku, Genda Gu, Stephen M. Shapiro, R. J. Birgeneau, and Guangyong Xu We present neutron inelastic scattering measurements of the full three-dimensional spin-wave dispersion in the multiferroic material BiFeO 3 for temperatures from 5 to 700 K. Despite the presence of strong electromagnetic coupling, the magnetic excitations behave as conventional magnons over all part... [Phys. Rev. B 86, 174419] Published Tue Nov 20, 2012

Schlagwort(e): Magnetism

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