Comment on "Theory of Impure Superconductors: Anderson versus Abrikosov and Gor'kov"
| dc.creator | Radtke, R. J. | |
| dc.date | 1993-06-16 | |
| dc.date.accessioned | 2026-07-07T03:06:52Z | |
| dc.date.available | 2026-07-07T03:06:52Z | |
| dc.description | In a recent article, Kim and Overhauser [Phys. Rev. B 47, 8025 (1993)] have found fault with the theory of impure superconductors by Abrikosov and Gor'kov and have proposed an alternative formalism based on Green's functions which are not derivable from a Dyson equation. Although the corrections to the Abrikosov-Gor'kov theory found by Kim and Overhauser are correct for non-retarded interactions, I argue that these corrections do not appear when one treats realistic retarded interactions within the field-theoretic approach of Abrikosov and Gor'kov. Direct numerical computation of the impurity-induced suppression of the superconducting transition temperature Tc for both retarded and non-retarded interactions illustrates these points. I conclude that Abrikosov-Gor'kov theory applied to physical electron-electron interactions yields a tractable formalism which accurately predicts the effects of magnetic and non-magnetic impurities on Tc. | |
| dc.description | 8 pages, one figure sent on request, REVTEX 2.1, KOcomment | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9306037 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9306037 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/26971 | |
| dc.subject | Condensed Matter | |
| dc.title | Comment on "Theory of Impure Superconductors: Anderson versus Abrikosov and Gor'kov" | |
| dc.type | text |