Intrinsic superconductor/normal-metal/superconductor-like weak links in Y1Ba2Cu3O7-x thin films

P. England, T. Venkatesan, X. D. Wu, A. Inam, M. S. Hegde, T. L. Cheeks, H. G. Craighead

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

Magnetotransport measurements on micron-sized wires of the thin-film high Tc superconductor Y1 Ba2 Cu3 O 7-x made by pulsed laser deposition reveal an exponential suppression of the critical current with magnetic field, and a power law dependence of the critical current on reduced temperature. We ascribe this behavior to crystallographic defects in the film which behave as superconductor/normal- metal/superconductor weak links in a magnetic field. From the measurements we estimate a critical current density of 106 A cm- 2 in a field of 16 T at 4.2 K.

Original languageEnglish (US)
Pages (from-to)2336-2338
Number of pages3
JournalApplied Physics Letters
Volume53
Issue number23
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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