Quantum electric dipole glass and frustrated magnetism near a critical point in Li2ZrCuO4
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Quantum electric dipole glass and frustrated magnetism near a critical point in Li2ZrCuO4
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| Автор |
Vavilova, E.
Moskvin, A. S. Arango, Y. C. Sotnikov, A. Drechsler, S. -L. Klingeler, R. Volkova, O. Vasiliev, A. Kataev, V. Büchner, B. |
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| Описание |
We report a new peculiar effect of the interaction between a sublattice of frustrated quantum spin-1/2 chains and a sublattice of pseudospin-1/2 centers (quantum electric dipoles) uniquely co-existing in the complex oxide γ-Li2ZrCuO4 (≡Li2CuZrO 4). 7Li nuclear magnetic resonance, Cu2+ electron spin resonance and a complex dielectric constant data reveal that the sublattice of Li+-derived electric dipoles orders glass like at Tg≃70 K yielding a spin site nonequivalency in the CuO 2 chains. We suggest that such a remarkable interplay between electrical and spin degrees of freedom might strongly influence the properties of the spiral spin state in Li2ZrCuO4 that is close to a quantum ferromagnetic critical point. In particular that strong quantum fluctuations and/or the glassy behavior of electric dipoles might renormalize the exchange integrals affecting this way the pitch angle of the spiral as well as be responsible for the missing multiferroicity present in other helicoidal magnets. Copyright © 2009 EPLA.
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| Дата |
2024-04-24T12:38:22Z
2024-04-24T12:38:22Z 2009 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) info:eu-repo/semantics/submittedVersion |
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| Идентификатор |
Vavilova, E., Moskvin, A. S., Arango, Y. C., Sotnikov, A., Drechsler, S.-L., Klingler, R., … Büchner, B. (2009). Quantum electric dipole glass and frustrated magnetism near a critical point in Li 2 ZrCuO 4. EPL (Europhysics Letters), 88(2), 27001. doi:10.1209/0295-5075/88/27001
0295-5075 Final All Open Access, Green https://arxiv.org/pdf/0810.5754 http://elar.urfu.ru/handle/10995/132571 10.1209/0295-5075/88/27001 |
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en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
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| Формат |
application/pdf
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| Издатель |
IOP Publishing
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| Источник |
EPL (Europhysics Letters)
EPL |
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