Some Remarks on the Frequency Dependence of Superconductivity and Ferromagnetism

Abstract

An attempt is made to explain the frequency dependence of superconductivity and ferromagnetism as a further consequence of the skin effect, assuming the existence of a surface layer which shows neither superconductive nor ferromagnetic properties. The existence of this surface layer may be in some way connected with the results of recent theoretical investigations on crystal structure involved in the ideas of Epstein on ferromagnetism and in Zwicky's conception of a secondary structure.