Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study
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 magneto...
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| Дата: | 2010 |
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| Автори: | , , , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2010
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/117179 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1171792017-05-21T03:03:05Z Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study Gnezdilov, V.P. Lamonova, K.V. Pashkevich, Yu.G. Lemmens, P. Berger, H. Bussy, F. Gnatchenko, S.L. Магнитоэлектрические эффекты в сегнетомагнетиках 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. 2010 Article 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 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Магнитоэлектрические эффекты в сегнетомагнетиках Магнитоэлектрические эффекты в сегнетомагнетиках |
| spellingShingle |
Магнитоэлектрические эффекты в сегнетомагнетиках Магнитоэлектрические эффекты в сегнетомагнетиках Gnezdilov, V.P. Lamonova, K.V. Pashkevich, Yu.G. Lemmens, P. Berger, H. Bussy, F. Gnatchenko, S.L. Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study Физика низких температур |
| 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. |
| format |
Article |
| author |
Gnezdilov, V.P. Lamonova, K.V. Pashkevich, Yu.G. Lemmens, P. Berger, H. Bussy, F. Gnatchenko, S.L. |
| author_facet |
Gnezdilov, V.P. Lamonova, K.V. Pashkevich, Yu.G. Lemmens, P. Berger, H. Bussy, F. Gnatchenko, S.L. |
| author_sort |
Gnezdilov, V.P. |
| title |
Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study |
| title_short |
Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study |
| title_full |
Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study |
| title_fullStr |
Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study |
| title_full_unstemmed |
Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study |
| title_sort |
magnetoelectricity in the ferrimagnetic cu₂oseo₃: symmetry analysis and raman scattering study |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2010 |
| topic_facet |
Магнитоэлектрические эффекты в сегнетомагнетиках |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117179 |
| citation_txt |
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. |
| series |
Физика низких температур |
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