Coulomb Correlations and Electronic Structure of CuCo2S4: a DFT + DMFT Study
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Coulomb Correlations and Electronic Structure of CuCo2S4: a DFT + DMFT Study
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| Автор |
Skornyakov, S. L.
Trifonov, I. O. Anisimov, V. I. |
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| Описание |
By employing a combined method of density functional theory and dynamical mean-field theory (DFT + DMFT) we study the spectral properties and local moment formation in the normal state of a Co-based superconductor CuCo2S4. The obtained quasiparticle mass enhancement (Formula presented.) is smaller than that in iron-based parent compounds indicating weak correlations in the Co 3d states. We show that the mass enhancement is accompanied by an insignificant renormalization and shift of the bands in the vicinity of the Fermi level. This subtle modification is sufficient to induce a substantial transformation of one of the Fermi surface sheets and occurs due to the presence of shallow Fermi surface pockets in the electronic structure of CuCo2S4. The calculated local and fluctuating moments are smaller than those in iron-based superconductors questioning the importance of spin fluctuations for understanding the pairing mechanism of CuCo2S4. © 2023, The Author(s).
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| Дата |
2024-04-05T16:19:42Z
2024-04-05T16:19:42Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
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| Идентификатор |
Skornyakov, SL, Trifonov, IO & Anisimov, VI 2023, 'Coulomb Correlations and Electronic Structure of CuCo2S4: a DFT + DMFT Study', JETP Letters, Том. 117, № 8, стр. 588–592. https://doi.org/10.1134/S0021364023600647
Skornyakov, S. L., Trifonov, I. O., & Anisimov, V. I. (2023). Coulomb Correlations and Electronic Structure of CuCo2S4: a DFT + DMFT Study. JETP Letters, 117(8), 588–592. https://doi.org/10.1134/S0021364023600647 0021-3640 Final All Open Access, Hybrid Gold https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152687323&doi=10.1134%2fS0021364023600647&partnerID=40&md5=6677ac5057c3931d4c3fe0960a99aa2e https://link.springer.com/content/pdf/10.1134/S0021364023600647.pdf http://elar.urfu.ru/handle/10995/130395 10.1134/S0021364023600647 85152687323 000966673800001 |
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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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