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Direct observation of intrinsic pinning by layered structure in single-crystal YBa sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · · Physical Review Letters; (USA)
; ; ; ; ;  [1]
  1. Science and Technology Center for Superconductivity and Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)

The intrinsic pinning in twinned and untwinned single-crystal YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} is observed using a novel crossed-magnetic-field technique for obtaining angular resolutions of {Delta}{theta}{lt}0.005{degree}. The pinning occurs for magnetic-field directions within a critical angle {theta}{sup *}{lt}1{degree} of the Cu-O planes. The data are discussed in the context of a lock-in transition of vortices in the {bold a}-{bold b} plane of the crystal.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5490370
Journal Information:
Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 67:3; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English