Effects of lattice distortion on the energy gap of a BCS superconductor

J.G. Brankov and N.S. Tonchev

Physica A: Statistical Mechanics and its Applications, 1976, vol. 84, issue 2, 371-391

Abstract: The model of Mattis and Langer for superconductors with a structural distortion associated with doubling of the lattice periodicity is studied. New results for the zero-temperature superconducting gap are found in the case of more than a half-filled band. The modification of both the electron density of states and the reduced BCS interaction is taken into account. A comparison with the results found for the additive type model is given.

Date: 1976
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:84:y:1976:i:2:p:371-391

DOI: 10.1016/0378-4371(76)90007-8

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