ISSN:
1572-9605
Keywords:
Superconductivity
;
Eliashberg equations
;
high-T c cuprates
;
organic superconductors
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract We consider the Eliashberg equations with an electron-phonon matrix elementg(k, k, q) possessing a low-energy cutoffξ 1. In the superconducting state, we assume that this cutoff is bound from below by the superconducting gap 2Δ. We solve for Δ andξ 1 self-consistently, as a function of temperature, and find that the ratio 2Δ(0)/Tc is very large; for parameters that we consider realistic for the cuprates, this ratio is approximately 10. This calculation applies to materials where the mean free path is long (clean limit). We also find that a hysteretic behavior is in principle possible.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00728426
Permalink
