Global phase coherence and dissipation in ultra-thin superconducting films

H. M. Jaeger, D. B. Haviland, A. M. Goldman

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A threshold for the onset of global phase coherence, or zero resistance, has been revealed by systematic studies of the superconductivity of ultra-thin gallium and lead films. This threshold appears to be controlled by the normal state sheet resistance of the films which is the only relevant variable. The threshold value of 6.5 kΩ□ agrees with previous observations on ultra-thin tin films and further supports the notion of a universal resistance threshold. This value also is in agreement with the predictions of recent theoretical models which indicate the importance of zero-point fluctuations coupled to dissipation in such film systems.

Original languageEnglish (US)
Pages (from-to)218-222
Number of pages5
JournalPhysica B: Physics of Condensed Matter
Volume152
Issue number1-2
DOIs
StatePublished - Aug 2 1988

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