Please use this identifier to cite or link to this item:
http://elar.urfu.ru/handle/10995/111459
Title: | LDA+DMFT Spectral Functions and Effective Electron Mass Enhancement in the Superconductor LaFePO |
Authors: | Skornyakov, S. L. Skorikov, N. A. Lukoyanov, A. V. Shorikov, A. O. Anisimov, V. I. |
Issue Date: | 2010 |
Publisher: | American Physical Society (APS) |
Citation: | LDA+DMFT Spectral Functions and Effective Electron Mass Enhancement in the Superconductor LaFePO / S. L. Skornyakov, N. A. Skorikov, A. V. Lukoyanov et al. // Physical Review B - Condensed Matter and Materials Physics. — 2010. — Vol. 81. — Iss. 17. — 174522. |
Abstract: | In this paper we report LDA+DMFT results (method combining local-density approximation with dynamical mean-field theory) for spectral properties of superconductor LaFePO. Calculated k -resolved spectral functions reproduce recent angle-resolved photoemission spectroscopy data. Obtained effective electron mass enhancement values m/≈1.9-2.2 are in good agreement with infrared and optical studies, de Haas-van Alphen, electrical resistivity, and electronic specific-heat measurements results that unambiguously evidence for moderate correlations strength in LaFePO. Similar values of m /m were found in the other Fe-based superconductors with substantially different superconducting transition temperatures. Thus, the dynamical correlation effects are essential in the Fe-based superconductors, but the strength of electronic correlations does not determine the value of superconducting transition temperature. © 2010 The American Physical Society. |
URI: | http://elar.urfu.ru/handle/10995/111459 |
Access: | info:eu-repo/semantics/openAccess |
SCOPUS ID: | 77955441405 |
WOS ID: | 000278141600112 |
PURE ID: | 8263472 |
ISSN: | 1098-0121 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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