Cooper pairing in the van hove singularity scenario of high-temperature superconductivity

Cooper pairing is shown to exist, and to be much stronger, when a density of states with a van Hove singularity is used in place of the usual smooth one. The binding energy for weak coupling again has an essential singularity but in the square root of the coupling constant, a property surviving in t...

Full description

Saved in:
Bibliographic Details
Published in:Solid state communications 1992, Vol.83 (11), p.891-893
Main Authors: Getino, J.M., Rubio, H., de Llano, M.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cooper pairing is shown to exist, and to be much stronger, when a density of states with a van Hove singularity is used in place of the usual smooth one. The binding energy for weak coupling again has an essential singularity but in the square root of the coupling constant, a property surviving in the BCS gap energy expression obtained by other workers.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(92)90907-Q