Self-Consistent Theory of Field Electron Emission from Superconductors

E.A. Litvinov; I.V. Uimanov

doi:doi:10.1051/jp4:1996510

Numéro		J. Phys. IV France Volume 06, Numéro C5, Septembre 1996 International Field Emission Society IFES'96 Proceedings of the 43^rd International Field Emission Symposium


Page(s)		C5-65 - C5-70
DOI		https://doi.org/10.1051/jp4:1996510

International Field Emission Society
IFES'96
Proceedings of the 43^rd International Field Emission Symposium

J. Phys. IV France 06 (1996) C5-65-C5-70
DOI: 10.1051/jp4:1996510

Self-Consistent Theory of Field Electron Emission from Superconductors

E.A. Litvinov and I.V. Uimanov

Institute of Electrophysics, Ural Division of Russian Academy of Sciences, 34 Komsomolskaya Street, Ekaterinburg 620049, Russia

Abstract
The tunneling Hamiltonian method generalized to describe the field emission process has been proposed and mvestigated as an approach for solving the field emission problem, talcing into account nonequilibrium phenomena occurring in the cathode. By means of an analysis of the kinetics of the electron subsystem of a superconductor it has been shown that the nonequilibrium state with excess quasiparticles, appearing with field electron emission, changes the superconducting properties of the cathode. The dependence of the superconducting gap on the field emission current has been revealed. This has made it possible to formulate general concepts of a self-consistent theory of field electron emission from superconductors.