Magnon spectrum of the helimagnetic insulator Cu2OSeO3
Magnon spectrum of the helimagnetic insulator Cu2OSeO3
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螺旋磁绝缘体 Cu2OSeO3 的磁振子谱
DOI:
10.1038/ncomms10725
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发表时间:
2016
影响因子:
16.6
通讯作者:
D.S. Inosov
中科院分区:
文献类型:
--
作者:
P.Y. Portnichenko;J. Romhanyi;Y.A. Onykiienko;A. Henschel;M. Schmidt;A.S. Cameron;M.A. Surmach;J.A. Lim;J.T. Park;A. Schneidewind;D.L. Abernathy;H. Rosner;Jeroen van den Brink;D.S. Inosov
Complex low-temperature-ordered states in chiral magnets are typically governed by a competition between multiple magnetic interactions. The chiral-lattice multiferroic Cu2OSeO3became the first insulating helimagnetic material in which a long-range order of topologically stable spin vortices known as skyrmions was established. Here we employ state-of-the-art inelastic neutron scattering to comprehend the full three-dimensional spin-excitation spectrum of Cu2OSeO3over a broad range of energies. Distinct types of high- and low-energy dispersive magnon modes separated by an extensive energy gap are observed in excellent agreement with the previously suggested microscopic theory based on a model of entangled Cu4tetrahedra. The comparison of our neutron spectroscopy data with model spin-dynamical calculations based on these theoretical proposals enables an accurate quantitative verification of the fundamental magnetic interactions in Cu2OSeO3that are essential for understanding its abundant low-temperature magnetically ordered phases.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
M. Kobets;K. Dergachev;E. Khatsko;A. Rykova;P. Lemmens;D. Wulferding;H. Berger
通讯作者:
H. Berger
影响因子:
41.2
作者:
Schwarze, T.;Waizner, J.;Grundler, D.
通讯作者:
Grundler, D.
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
H. Effenberger;F. Pertlik
通讯作者:
F. Pertlik
影响因子:
4.6
作者:
Wu HC;Wei TY;Chandrasekhar KD;Chen TY;Berger H;Yang HD
通讯作者:
Yang HD
影响因子:
0.8
作者:
Gnezdilov, V. P.;Lamonova, K. V.;Gnatchenko, S. L.
通讯作者:
Gnatchenko, S. L.