Electron Correlation Effects in Paramagnetic Cobalt
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Electron Correlation Effects in Paramagnetic Cobalt
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| Автор |
Belozerov, A. S.
Anisimov, V. I. |
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| Описание |
We study the influence of Coulomb correlations on spectral and magnetic properties of fcc cobalt using a combination of density functional theory and dynamical mean-field theory. The computed uniform and local magnetic susceptibilities obey the Curie–Weiss law, which, as we demonstrate, occurs due to the partial formation of local magnetic moments. We find that the lifetime of these moments in cobalt is significantly less than in bcc iron, suggesting a more itinerant magnetism in cobalt. In contrast to the bcc iron, the obtained electron self-energies exhibit a quasiparticle shape with the quasiparticle mass enhancement factor m*/m ~ 1.8, corresponding to moderately correlated metal. Finally, our calculations reveal that the static magnetic susceptibility of cobalt is dominated by ferromagnetic correlations, as evidenced by its momentum dependence. © 2023, The Author(s).
We are grateful to A.A. Katanin for valuable discussions. |
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| Дата |
2024-04-05T16:23:54Z
2024-04-05T16:23:54Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
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| Идентификатор |
Belozerov, A & Anisimov, V 2023, 'Electron Correlation Effects in Paramagnetic Cobalt', JETP Letters, Том. 117, № 11, стр. 854-858. https://doi.org/10.1134/S0021364023601379
Belozerov, A., & Anisimov, V. (2023). Electron Correlation Effects in Paramagnetic Cobalt. JETP Letters, 117(11), 854-858. https://doi.org/10.1134/S0021364023601379 0021-3640 Final All Open Access, Hybrid Gold, Green https://www.scopus.com/inward/record.uri?eid=2-s2.0-85160407168&doi=10.1134%2fS0021364023601379&partnerID=40&md5=bc2a7d39dda530bdf2c20e318021eb29 https://link.springer.com/content/pdf/10.1134/S0021364023601379.pdf http://elar.urfu.ru/handle/10995/130521 10.1134/S0021364023601379 85160407168 000998434900003 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
Pleiades Publishing
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| Источник |
JETP Letters
JETP Letters |
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