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

Magnetotransport measurements on micron-sized wires of the thin-film high Tc superconductor Y1 Ba2 Cu3 O7−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 asc...

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Veröffentlicht in:	Applied physics letters 1988-12, Vol.53 (23), p.2336-2338
Hauptverfasser:	ENGLAND, P, VENKATESAN, T, WU, X. D, INAM, A, HEGDE, M. S, CHEEKS, T. L, CRAIGHEAD, H. G
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Physics Properties of type I and type II superconductors Superconductivity
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Zusammenfassung:	Magnetotransport measurements on micron-sized wires of the thin-film high Tc superconductor Y1 Ba2 Cu3 O7−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.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.100517