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Lorentz force induced dissipation and pinning in transport properties of YBa sub 2 Cu sub 3 O sub 7 minus. delta. single crystals

Conference · · AIP Conference Proceedings (American Institute of Physics); (United States)
OSTI ID:5101269
 [1];  [2];  [3];  [4];  [5]; ;  [1];  [6]
  1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. Science Technology Center for Superconductivity and Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  3. Materials Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, Purdue University, West Lafayette, Indiana (USA)
  4. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, University of Illinois at Chicago, Chicago, Illinois (USA)
  5. Department of Physics, University of Illinois at Chicago, Chicago, Illinois (USA)
  6. Department of Physics, University of California-Davis, Davis, California 95616 (United States)
We present direct observation of twin boundary pinning and Lorentz force induced flux motion in twinned, untwinned, and oxygen deficient crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}. We find that twin boundaries act as strong pinning centers only when the vortex lines are pinned within the twin boundary planes. In addition, we find anomalous broadening in the superconducting resistive transition in magnetic fields in an oxygen dificient crystal where T{sub {ital c}}{lt}30 K.
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5101269
Report Number(s):
CONF-900990--
Conference Information:
Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 219:1
Country of Publication:
United States
Language:
English