Problems of the theory of superconductivity which involve spatial inhomogeneity

This book is concerned with questions which are related to equilibrium phenomena in superconductors, giving particular attention to effects determined by a spatial variation of the order parameter. The microscopic theory of superconductivity is developed on the basis of a model which takes into account the direct interaction between electrons. The theory of current relations in superconductors is discussed, taking into consideration the magnetic properties of superconductors in weak fields and the Meissner effect. Aspects regarding the general theory of tunneling are also explored, including the Josephson effect. An investigation is conducted of the theory of current conditions in areas in which the superconductor is in contact with normally conducting metal.