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Estimation of intraband and interband relative coupling constants from temperature dependences of the order parameter for two-gap superconductorsстатья
Информация о цитировании статьи получена из
Web of Science,
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 апреля 2016 г.
- Авторы: Kuzmichev S.A., Kuzmicheva T.E., Tchesnokov S.N., Pudalov V.M., Vasiliev A.N.
- Журнал: Journal of Superconductivity and Novel Magnetism
- Том: 29
- Год издания: 2016
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Первая страница: 1111
- Последняя страница: 1116
- DOI: 10.1007/s10948-016-3386-5
- Аннотация: We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB2. The experimental $\Delta_{L,S}(T)$ are well-fitted by a two-gap model based on Moskalenko and Suhl system of equations (extended by a BCS-integral renormalization). Under the fitting procedure, we estimate the most important attribute of superconducting state -- relative electron-boson coupling constants and eigen BCS-ratios for both condensates. We show a driving role of a strong intraband coupling in the bands with the large gap and rather weak interband coupling in all the superconductors under study. keywords: High-temperature superconductors; Two-gap superconductivity; Iron Pnictides; MgB2; Andreev spectroscopy; MARE spectroscopy PACS: 74.25.-q, 74.45.+c, 74.70.Xa
- Добавил в систему: Кузьмичев Светослав Александрович