The two-band Ginzburg-Landau theory analysis of the surface critical field of the two-band superconductor Lu2Fe3Si5 | Zendy

Minxia Liu | Zendy

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The two-band Ginzburg-Landau theory analysis of the surface critical field of the two-band superconductor Lu2Fe3Si5

Author(s) -

Minxia Liu

Publication year - 2011

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.60.017401

Subject(s) - superconductivity , critical field , condensed matter physics , physics , ginzburg–landau theory , magnetic field , field (mathematics) , surface (topology) , plane (geometry) , type ii superconductor , quantum mechanics , geometry , mathematics , pure mathematics

Two-band Ginzburg-Landau (GL) theory is adopted to analyze the surface critical field Hc3 of Lu2Fe3Si5 . When the surface of a superconductor coincides with any of crystallographic planes and is parallel to the external magnetic field H, the ratio Hc3/Hc2 (where Hc2 is the upper critical field of Lu2Fe3Si5) is strongly dependent on temperature. When the surface of a superconductor coincides with the bc plane and is parallel to H, the ratio depends not only on temperature, but also on the angle between the c axis and H. However, the ratio is constant for single-band superconductors.

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