Phys. Rev. B 78, 224509 (2008) [7 pages]Temperature dependence of the superheating field for superconductors in the high- κ London limitReceived 26 October 2008; published 5 December 2008 We study the metastability of the superheated Meissner state in type II superconductors with κ⪢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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.78.224509
DOI:
10.1103/PhysRevB.78.224509
PACS:
74.25.Op
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.