Transition Temperature of Strong-Coupled Superconductors

1968/03/10 by W. L. McMillan · 25 citations
Physics and Astronomy · Materials Science · #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #Magnetic and transport properties of perovskites and related materials

paper · doi:10.1103/physrev.167.331

Abstract

The superconducting transition temperature is calculated as a function of the electron-phonon and electron-electron coupling constants within the framework of the strong-coupling theory. Using this theoretical result, we find empirical values of the coupling constants and the "band-structure" density of states for a number of metals and alloys. It is noted that the electron-phonon coupling constant depends primarily on the phonon frequencies rather than on the electronic properties of the metal. Finally, using these results, one can predict a maximum superconducting transition temperature.

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