Localization Effects in Two-Dimensional Superconductors
Sadamichi MaekawaThe Research Institute for Iron, Steel and Other Metals, Tohoku UniversityHidetoshi FukuyamaThe Institute for Solid State Physics, The University of Tokyo
1982en
ABI
Abstract
Effects of localization on two-dimensional superconductors have been investigated by taking into account quantum corrections to the theory of dirty superconductors in the order of ( ε F τ 0 ) -1 where ε F and τ 0 are the Fermi energy and the relaxation time of an electron, respectively. The mean field superconducting transition temperature is seen to be reduced by localization. This is because the Coulomb repulsive interaction is enhanced and the density of states of electrons is depressed in dirty systems. Recent experiments by Kobayashi et al. on granular films of tin are discussed in this context.
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