Strong-Coupling Theory of Impure Superconductors : Correspondence with Weak-Coupling Theory
| dc.creator | Kim, Yong-Jihn | |
| dc.date | 1997-12-26 | |
| dc.date.accessioned | 2026-07-07T03:09:42Z | |
| dc.date.available | 2026-07-07T03:09:42Z | |
| dc.description | We reconsider the ordinary impurity effect on the transition temperature $T_{c}$ of superconductors using the Eliashberg formalism. It is shown that the correspondence principle, which relates strong-coupling and weak-coupling theories, works only when Anderson's pairing condition between the time-reversed scattered-states is used. For an Einstein phonon model, the change of the electron density of states caused by the impurity scattering leads to a $T_{c}$ decrease proportional to ${1/ E_{F}τ}$ in the dirty limit. It is pointed out that the phonon-mediated interaction decreases by the same weak localization correction term as that of the conductivity. Accordingly, for strongly localized states the phonon-mediated interaction is exponentially small. We also discuss the case of Debye phonon model. | |
| dc.description | 16 pages, revtex, no figures, For more information, please see http://taesan.kaist.ac.kr/~yjkim | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9712295 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9712295 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27991 | |
| dc.subject | Superconductivity | |
| dc.title | Strong-Coupling Theory of Impure Superconductors : Correspondence with Weak-Coupling Theory | |
| dc.type | text |