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Quantum Fluctuations in Granular Superconductors

Published online by Cambridge University Press:  28 February 2011

R.S. Fishman
R.S. Fishman*
Affiliation:
Physics Department, North Dakota State University, Fargo, ND 58105-5566
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Abstract

A 1/z expansion is used to study the coupling of phase fluctuations in an array of superconducting grains. By lowering Tc. and increasing the critical grain diameter αc,fluctuations suppress the long-range order in the material. When the temperature T is of order U = e2/C, where C is the grain capacitance, peaks appear in the fluctuation corrections to both the specific heat and the short-range order parameter. These peaks are induced by the coupling between thermal fluctuations of the charge and quantum fluctuations of the phase on neighboring grains.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 195: Symposium S – Physical Phenomena in Granular Materials , 1990 , 363
Copyright
Copyright © Materials Research Society 1990

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References

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