Heat-current operator and transport entropy of vortices in type-II superconductors

Abstract

The definition of a heat-current operator and the microscopic treatment of a temperature gradient in a magnetic conductor are revised in order to resolve a conflict with the third law of thermodynamics and Onsager's principle. Some new theoretical results on the transport entropy of vortices in type-II superconductors with magnetic and nonmagnetic impurities are reported to substantiate our new lineartransport analysis.