Abstract
The superconducting transition temperatureT c of a two band superconductor in the presence of magnetic and nonmagnetic impurities as well as exchange fields is calculated using a new (8 × 8)-matrix formalism for the electron Green's function. In particular we investigate the influence of spin correlations onT c near a magnetic phase transition. It is shown that in the strong interband phonon coupling limit the system behaves essentially as a one band superconductor. In the weak coupling limit we find typical deviations from one band theories.
Similar content being viewed by others
Literatur
Matthias, B.T., Suhl, H., Corenzwit, E.: Phys. Rev. Letters1, 449 (1958)
Gorkov, L.P., Rusinov, A.I.: Soviet Phys. JETP19, 922 (1964)
Fulde, P., Maki, K.: Phys. Rev.141, 275 (1966)
Abrikosov, A.A., Gorkov, L.P.: Soviet Phys. JETP12, 1243 (1961)
Rupp, G.: J. Phys. F3, 1403 (1973)
Roth, S., Ibel, K., Just, W.: J. Phys. C6, 3465 (1973)
Entel, P., Klose, W.: J. Low Temp. Phys.17, 529 (1974)
Rainer, D.: Z. Physik252, 174 (1972)
Takano, F.: Progr. Theor. Phys.36, 1095 (1966)
Keller, J., Benda, R.: J. Low Temp. Phys.2, 141 (1970)
Kuwasawa, Y., Sekizawa, K., Usui, N., Yasukochi, K.: J. Phys. Soc. Japan27, 590 (1969)
Bennemann, K.H.: Phys. Rev. Letters17, 438 (1966)
Will, P., Brusberg, M.: J. Low Temp. Phys.18, 169 (1975)
Entel, P., Crisan, M., Bongi, G., Klose, W.: Wird in J. Low Temp. Phys. veröffentlicht
Entel, P.: Doktorarbeit, Saarbrücken 1975, unveröffentlicht
Hauser, J.J., Robbins, M., DiSalvo, F.J.: Phys. Rev. B8, 1038 (1973)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Entel, P., Klose, W., Fischer, Ø. et al. Der Einfluß von Spinfluktuationen auf die Sprungtemperatur eines Zweibandsupraleiters. Z Physik B 21, 363–368 (1975). https://doi.org/10.1007/BF01325396
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01325396