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The critical magnetic field of anisotropic two-band magnetic superconductors

TitleThe critical magnetic field of anisotropic two-band magnetic superconductors
Publication TypeJournal Article
Year of Publication2554
Authorsอาภาพงศ์ ชั่งจันทร์
JournalSolid State Communications
Volume151
Issue14-15
Pagination988-992
Date PublishedJuly–August 2011
Type of Articleบทความวิจัย
ISSN0038-1098
KeywordsAnisotropic magnetic superconductors, Critical magnetic field, Ginzburg–Landau theory, Two-band superconductors
Abstract

The upper and lower critical fields, and the critical field ratio of an anisotropic two-band magnetic superconductor in the Ginzburg–Landau (GL) scenario is derived analytically. The temperature-dependent upper critical field is investigated and applied to Fe-based superconductors. We find that a very high value of zero-temperature upper critical field in Fe-based superconductors can be found in the negative differential susceptibility region. The temperature-dependent upper critical field is presented in two formulas, in the empirical view and in the GL two-band view, which agrees with the experimental results.

URLhttps://www.sciencedirect.com/science/article/pii/S0038109811002274
DOI10.1016/j.ssc.2011.04.032