Renormalization of the mean-field superconducting penetration depth in epitaxial YBa2Cu3O7 films

A. T. Fiory, A. F. Hebard, P. M. Mankiewich, R. E. Howard

Research output: Contribution to journalArticle

240 Scopus citations

Abstract

The a-b-plane penetration depth (T) in YBa2Cu3O7 films, determined from kinetic inductance measurements, follows the temperature dependence of weak-coupling mean-field BCS theory near Tc to within 0.5 K of Tc, resolution limited either by homogeneity or for the thinnest films by phase fluctuations. The Kosterliz-Thouless transition in a thin film is the first observation in a clean type-II superconductor, noted by the universal superfluid jump and the algebraic-decay law with a square-root cusp exponent.

Original languageEnglish (US)
Pages (from-to)1419-1422
Number of pages4
JournalPhysical review letters
Volume61
Issue number12
DOIs
StatePublished - Jan 1 1988
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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