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Magnetoelectricity in the ferrimagnetic Cu₂OSeO₃: symmetry analysis and Raman scattering study

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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Main Authors: Gnezdilov, V.P., Lamonova, K.V., Pashkevich, Yu.G., Lemmens, P., Berger, H., Bussy, F., Gnatchenko, S.L.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2010
Series:Физика низких температур
Subjects:
Магнитоэлектрические эффекты в сегнетомагнетиках
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/117179
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spelling 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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AT bergerh magnetoelectricityintheferrimagneticcu2oseo3symmetryanalysisandramanscatteringstudy
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first_indexed 2023-10-18T20:29:12Z
last_indexed 2023-10-18T20:29:12Z
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