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Effects of Controlled Defects on the Vortex-Solid Melting Transition of Y-Ba-Cu-O Single Crystals

Published online by Cambridge University Press:  26 February 2011

W. Jiang ,
N. -C. Yeh ,
D. S. Reed ,
U. Kotlani ,
T. A. Tombrello ,
A. P. Rice  and
F. Holtzberg
W. Jiang
Affiliation:
Department of Physics, California Institute of Technology Pasadena, CA 91125
N. -C. Yeh
Affiliation:
Department of Physics, California Institute of Technology Pasadena, CA 91125
D. S. Reed
Affiliation:
Department of Physics, California Institute of Technology Pasadena, CA 91125
U. Kotlani
Affiliation:
Department of Physics, California Institute of Technology Pasadena, CA 91125
T. A. Tombrello
Affiliation:
Department of Physics, California Institute of Technology Pasadena, CA 91125
A. P. Rice
Affiliation:
Department of Physics, California Institute of Technology Pasadena, CA 91125
F. Holtzberg
Affiliation:
IBM Research Division, Thomas J. Watson Research Center Yorktown Heights, NY 10598
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Abstract

We report systematic studies of the dc transport properties in proton-irradiated Y-Ba-Cu-O single crystals. We find that the onset of vortex dissipation in moderately irradiated samples is associated with the occurrence of a second-order vortex-solid melting transition. In addition, the decreasing zero-field transition temperature and increasing critical current density with the increasing defects reveal the effects of disorder on reducing the electron mean-free-path and on increasing the pinning density.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 275: Symposium S – Layered Superconductors: Fabrication, Properties and Applications , 1992 , 789
Copyright
Copyright © Materials Research Society 1992

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References

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