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Defect Properties of High Temperature Superconductors Probed by Positrons

Published online by Cambridge University Press:  28 February 2011

Y.C. Jean ,
H. Nakanishi ,
P.E.A. Turchi ,
R.H. Homell ,
A.L. Wachs ,
M.J. Fluss ,
R. L. Meng ,
P.H. Hor ,
Z.J. Huang  and
C.W. Chu
Y.C. Jean
Affiliation:
University of Missouri-Kansas City, Kansas City, MO 64110, USA
H. Nakanishi
Affiliation:
University of Missouri-Kansas City, Kansas City, MO 64110, USA
P.E.A. Turchi
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
R.H. Homell
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
A.L. Wachs
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
M.J. Fluss
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
R. L. Meng
Affiliation:
University of Houston, Houston, TX 77004, USA
P.H. Hor
Affiliation:
University of Houston, Houston, TX 77004, USA
Z.J. Huang
Affiliation:
University of Houston, Houston, TX 77004, USA
C.W. Chu
Affiliation:
University of Houston, Houston, TX 77004, USA
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Abstract

Measurements of electron momentum density by positron annihilation are influenced by thepresence of defects in superconducting oxides. Both lifetime and Doppler broadening measurements are sensitive to the superconducting transition. Possible candidates for the defect species are discussed along with their role in modifying the positron response.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 138: Symposium Q – Characterization of the Structure and Chemistry of Defects in Materials , 1988 , 137
Copyright
Copyright © Materials Research Society 1989

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References

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