Properties of parallel upper critical field within Continuous Ginzburg-Landau model

Details Properties of parallel upper critical field within Continuous Ginzburg-Landau model Properties of parallel upper critical field within Continuous Ginzburg-Landau model

2002-01-18

arxiv.org/abs/cond-mat/0201322v1

Physica C 383 (2002) 247--255

Physics

Condensed Matter

Superconductivity

5 pages, 7 figures

Scientific paper

10.1016/S0921-4534(02)01326-6

In this paper, we employ a continuous Ginzburg-Landau model to study the behaviors of the parallel upper critical field of an intrinsically-layered superconductor. Near $T_c$ where the order parameter is nearly homogeneous, the parallel upper critical field is found to vary as $(1-T/T_c)^{1/2}$. With a well-localized order parameter, the same field temperature dependence holds over the whole temperature range. The profile of the order parameter at the parallel upper critical field may be of a Gaussian type, which is consistent with the usual linear Ginzburg-Landau theory. In addition, the influences of the unit cell dimension and the average effective masses on the parallel upper critical field and the associated order parameter are also addressed.

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