Physics – Condensed Matter – Superconductivity
Scientific paper
2002-01-18
Physics
Condensed Matter
Superconductivity
Scientific paper
Within a continuous Ginzburg-Landau model for layered superconductors, two procedures are proposed to determine the upper critical field parallel to the $c$-$a$ crystal plane with an angle $\theta$ tilted from the c-axis. For an intrinsically layered superconductor, the upper critical fields for $\theta \to 90^\circ$, as determined by the two procedures, are consistent with each other and in reasonably good agreement with those determined by similar procedures suited for the parallel upper critical field ($\theta = 90^\circ$). The profile of the order parameter obtained at $B_{c2}$ is Gaussian-like, indicating the plausibility of the procedures proposed.
Lim Shiau Hong
Ong C. K.
Wang Lanjuan
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