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Indium-Impregnated Porous Glass: Magnetotransport and Superconducting Transition

Published online by Cambridge University Press:  28 February 2011

M. J. Graf ,
C. A. Huber ,
T. E. Huber  and
A. P. Salzberg
M. J. Graf
Affiliation:
Boston College, Dep. of Physics, Chestnut Hill, MA 02167
C. A. Huber
Affiliation:
Francis Bitter National Magnet Laboratory, M.I.T., Cambridge, MA 02139
T. E. Huber
Affiliation:
Harvard University, Lyman Laboratory of Physics, Cambridge, MA 02138
A. P. Salzberg
Affiliation:
University of Puerto Rico, Dep. of Physics, Rio Piedras, PR 00931
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Abstract

Measurements of the resistive superconducting transition and magnetoresistance of indium metal in the restricted geometry of 50 Å size porous Vycor glass are reported. We have mapped out the upper critical magnetic field versus temperature phase diagram for these transitions for fields up to 20 T and temperatures down to 100 mK. The results are consistent with magnetization measurements by previous authors and can be generally interpreted in terms of the description of inhomogeneous type-II superconductors. The field-induced resistive transitions exhibit unusual behavior not probed by previous bulk-type measurements which may be related to the microstructure of the composite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 195: Symposium S – Physical Phenomena in Granular Materials , 1990 , 397
Copyright
Copyright © Materials Research Society 1990

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References

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