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

Abstract

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.

5 pages, 7 figures

References in corpus (1)

• Theory of the Resistive Transition in Overdoped $T{l}_{2}B{a}_{2}Cu{O}_{6+x}$: Implications for the angular dependence of the quasiparticle scattering rate in High-$T_c$ superconductors