Temperature and Purity Dependence of the Superconducting Critical Field, H c 2 . III. Electron Spin and Spin-Orbit Effects
1966; American Institute of Physics; Volume: 147; Issue: 1 Linguagem: Inglês
10.1103/physrev.147.295
ISSN1536-6065
AutoresN. R. Werthamer, Eugene Helfand, P. C. Hohenberg,
Tópico(s)Magnetic and transport properties of perovskites and related materials
ResumoA previously obtained solution of the linearized Gor'kov equations for the upper critical magnetic field ${H}_{c2}$ of a bulk type-II superconductor is extended to include the effects of Pauli spin paramagnetism and spin-orbit impurity scattering. To carry out the calculation, it is necessary to introduce an approximation which assumes that spin-orbit scattering is infrequent in comparison with spin-independent scattering. It is found that spin-orbit scattering counteracts the effects of the spin paramagnetism in limiting the critical field and improves agreement between theory and experiment.
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