1989/03/01 by M. Schossmann, J. P. Carbotte, J. P. Ćarbotte · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #High-pressure geophysics and materials #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds
paper · doi:10.1103/physrevb.39.4210
openalex publication_date 1989/03/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
We consider the effect of Pauli limiting on the upper critical magnetic field Hc2 of a strong-coupling superconductor with arbitrary concentration of impurities. In the extreme Pauli limit, Hc2P is independent of the impurities but does not correspond to the highest attainable value for Hc2 except for the dirty BCS limit. In an appropriate approximation, our equations reduce correctly to the well-known Werthamer-Helfand-Hohenberg equations with an important difference that the band-splitting term is renormalized by a factor of (1+\ensuremathλ)^\mathrm\ensuremath-1. This greatly reduces its effect. Strong-coupling corrections that go beyond this renormalization are also considered.