A generalization of the standard formula for the electrical resistivity of normal rare-earth metals |
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| Authors: | A E Szukiel K Durczewski |
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| Institution: | (1) Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, W-7000 Stuttgart 80, Germany;(2) Theoretical Division, Los Alamos National Laboratory, 87545 Los Alamos, NM, USA |
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| Abstract: | A unified approach to superconductivity is presented using natural extensions of weak coupling BCS theory. Multiphonon-multiband interactions cause a multigap opening atT
c
, with cooperative pairing in all bands incorporated via interband interactions. Strong increases inT
c
are found due to interband-induced gap coupling. Model calculations for the experimentally observed gap distribution are presented. |
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