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Ion-Beam-Induced Destruction of Superconducting Phase Coherence in YBa2Cu3O7-δ

Published online by Cambridge University Press:  28 February 2011

Alice E. White
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
K. T. Short
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
D. C. Jacobson
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
J. M. Poate
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
R. C. Dynes
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
P. M. Mankiewich
Affiliation:
AT&T Bell Laboratories, Holmdel, NJ 07733
W. J. Skocpol
Affiliation:
AT&T Bell Laboratories, Holmdel, NJ 07733
R. E. Howard
Affiliation:
AT&T Bell Laboratories, Holmdel, NJ 07733
M. Anzlowar
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
K. W. Baldwin
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
A. F. J. Levi
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
J. R. Kwo
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
T. Hsieh
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
M. Hong
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
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Abstract

We have explored the effects of ion beam irradiation on the electrical and structural properties of superconducting thin films of YBa2Cu3O7-δ. Damage created by nuclear energy loss processes degrades the superconducting transitions. In general, the onset temperatures do not vary significantly with ion fluence, but the transition widths broaden until the resistance no longer reaches zero. This behavior is strikingly similar to that observed in granular superconducting films where islands of superconductor are progressively decoupled from each other, destroying the phase coherence. Data from resistance measurements as well as from Rutherford Backscattering and channeling measurements suggest that ion bombardment is not changing the volume fraction of superconducting material substantially.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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References

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