Expansion in 1/z for the transition temperature of granular superconductors

R. S. Fishman

doi:10.1103/PhysRevLett.63.89

Expansion in 1/z for the transition temperature of granular superconductors

R. S. Fishman

Materials Theory

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

An expansion in powers of 1/z is used to study the effect of phase fluctuations on the transition temperature of a granular superconductor, modeled as an array of Josephson junctions. The lowest-order correction to Tc/zJ diverges to negative infinity at the grain diameter ±=zJ/U=2 and reaches the value -1/2z when ±= which corresponds to the classical XY model. The lowest-order correction to the critical grain diameter is also calculated.

Original language	English
Pages (from-to)	89-92
Number of pages	4
Journal	Physical Review Letters
Volume	63
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.63.89
State	Published - 1989

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10.1103/PhysRevLett.63.89

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abstract = "An expansion in powers of 1/z is used to study the effect of phase fluctuations on the transition temperature of a granular superconductor, modeled as an array of Josephson junctions. The lowest-order correction to Tc/zJ diverges to negative infinity at the grain diameter ±=zJ/U=2 and reaches the value -1/2z when ±= which corresponds to the classical XY model. The lowest-order correction to the critical grain diameter is also calculated.",

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AB - An expansion in powers of 1/z is used to study the effect of phase fluctuations on the transition temperature of a granular superconductor, modeled as an array of Josephson junctions. The lowest-order correction to Tc/zJ diverges to negative infinity at the grain diameter ±=zJ/U=2 and reaches the value -1/2z when ±= which corresponds to the classical XY model. The lowest-order correction to the critical grain diameter is also calculated.

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Expansion in 1/z for the transition temperature of granular superconductors

Abstract

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