Correlation of Vortex Motion in High-{ital T}{sub {ital c}} Superconductors

Journal Article · Mon Apr 03 00:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.74.2796· OSTI ID:44855

Lee, T S; Missert, N; Sagdahl, L T; Clarke, J; Clem, J R; Char, K; Eckstein, J N; Fork, D K; Lombardo, L; Kapitulnik, A; Schneemeyer, L F; Waszczak, J V; van Dover, R B ^[1]

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1. Department of Physics, University of California, Berkeley, California 94720 (United States)

The magnetic flux noise generated by films and crystals of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital y}} and YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}, up to 30 {mu}m thick and cooled in nominally zero magnetic field, has been measured at opposing surfaces by two dc superconducting quantum interference devices. For both materials, the noise sources at the two surfaces were highly correlated at specific temperatures in a given cooldown. This result suggests that the observed vortices moved as rigid rods. At other temperatures, the noise was mostly uncorrelated, suggesting that the relevant vortices were pinned at more than one point along their length.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098; W-7405-ENG-82
• OSTI ID: 44855
• Journal Information: Physical Review Letters, Vol. 74, Issue 14; Other Information: PBD: 3 Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
VORTICES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
BARIUM OXIDES
YTTRIUM OXIDES
HIGH-TC SUPERCONDUCTORS
MOTION
CRYSTAL DEFECTS
CORRELATIONS
THERMODYNAMIC PROPERTIES