Evidence for strong Coulomb correlations in the metallic phase of vanadium dioxide
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Evidence for strong Coulomb correlations in the metallic phase of vanadium dioxide
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| Автор |
Belozerov, A. S.
Poteryaev, A. I. Anisimov, V. I. |
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| Описание |
The influence of Coulomb correlations on magnetic and spectral properties in the metallic rutile phase of vanadium dioxide is studied by state of the art LDA + DMFT method. Calculation results in strongly correlated metallic state with an effective mass renormalization m*/m ≈ 2. Uniform magnetic susceptibility shows Curie-Weiss temperature dependence with effective magnetic moment, pefftheor = 1.54μB, in a good agreement with the experimental value peffexp = 1.53μB that is close to ideal value for V4+ ion with the spin S = 1/2, peff = 1.73μB. Calculated spectral function shows well developed Hubbard bands observable in the recent experimental photoemission spectra. We conclude that VO2 in rutile phase is strongly correlated metal with local magnetic moments formed by vanadium d-electrons. © 2011 Pleiades Publishing, Ltd.
Marie Curie: MIF1 CT 2006 021820; Russian Foundation for Basic Research, РФФИ: 08 03 00930a, 10 02 00046a; Russian Academy of Sciences, РАН; Dynasty Foundation The authors thank A. Georges and S. Biermann who were at the initial stage of this work and A. Kata nin and A. Lichtenstein for useful discussions. A.P. thanks the Marie Curie grant no. MIF1 CT 2006 021820. This work was supported by the Russian Foundation for Basic Research (project nos. 10 02 00046a, 08 03 00930a), the Dynasty Foundation, and the Presidium of the Russian Academy of Science (program no. 7 “Quantum Microphysics of Con densed Matter”). |
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| Дата |
2024-04-24T12:38:24Z
2024-04-24T12:38:24Z 2011 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) info:eu-repo/semantics/submittedVersion |
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| Идентификатор |
Belozerov, A. S., Poteryaev, A. I., & Anisimov, V. I. (2011). Evidence for strong Coulomb correlations in the metallic phase of vanadium dioxide. JETP Letters, 93(2), 70–74. doi:10.1134/s0021364011020056
0021-3640 Final All Open Access, Green https://arxiv.org/pdf/1004.3214 http://elar.urfu.ru/handle/10995/132585 10.1134/S0021364011020056 |
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| Язык |
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 |
Pleiades Publishing Ltd
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| Источник |
JETP Letters
JETP Letters |
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