Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study
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| Creator |
Gnezdilov, V.P.
Lamonova, K.V. Pashkevich, Yu.G. Lemmens, P. Berger, H. Bussy, F. Gnatchenko, S.L. |
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| Subject |
Магнитоэлектрические эффекты в сегнетомагнетиках
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| Description |
We report Raman scattering studies and magneto/structural symmetry analysis of the many sublattices ferrimagnet Cu₂OSeO₃ with a cubic symmetry and a linear magnetoelectric effect. There is no spectroscopic evidence for structural lattice distortions below TC = 60 K, which are expected due to magnetoelectric coupling. Using symmetry arguments we explain this observation by considering a special type of ferrimagnetic ground state which does not generate a spontaneous electric polarization. Interestingly, Raman scattering shows a strong increase of electric polarization of media through a dynamic magnetoelectric effect as a remarkable enhancement of the scattering intensity below TC. New lines of purely magnetic origin have been detected in the magnetically ordered state. A part of them are attributed as scattering on exchange magnons. Using this observation and further symmetry considerations we argue for strong Dzyaloshinskii–Moriya interaction existing in the Cu₂OSeO₃.
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| Date |
2017-05-20T14:32:27Z
2017-05-20T14:32:27Z 2010 |
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| Type |
Article
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| Identifier |
Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study / V.P. Gnezdilov, K.V. Lamonova, Yu.G. Pashkevich, P. Lemmens, H. Berger, F. Bussy, and S.L. Gnatchenko // Физика низких температур. — 2010. — Т. 36, № 6. — С. 688–697. — Бібліогр.: 22 назв. — англ.
0132-6414 PACS: 78.30.–j, 75.50.Gg, 77.84.Bw, 63.20.–e http://dspace.nbuv.gov.ua/handle/123456789/117179 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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