Temperature dependence of the superheating field for superconductors in the high-k London limit

Details Temperature dependence of the superheating field for superconductors in the high-k London limit Temperature dependence of the superheating field for superconductors in the high-k London limit

2008-10-26

arxiv.org/abs/0810.4720v2

Phys.Rev.B78:224509,2008

Physics

Condensed Matter

Superconductivity

7.5 pages, 2 figures

Scientific paper

10.1103/PhysRevB.78.224509

We study the metastability of the superheated Meissner state in type II superconductors with k >> 1 beyond Ginzburg-Landau theory, which is applicable only in the vicinity of the critical temperature. Within Eilenberger's semiclassical approximation, we use the local electrodynamic response of the superconductor to derive a generalized thermodynamic potential valid at any temperature. The stability analysis of this functional yields the temperature dependence of the superheating field. Finally, we comment on the implications of our results for superconducting cavities in particle accelerators.

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