Influence of correlated impurities on the onset of Cooper pairing
I. A. Fomin
P.L. Kapitza Institute for Physical Problems RAS, 119334 Moscow, Russia
Abstract
Effect of two-particle correlations between impurities on the
temperature of transition of a Fermi liquid in the superfluid or
superconducting state is analyzed. It is shown, that correlations
with a radius, exceeding correlation length of the superconductor
can have a pronounced effect on the transition temperature. The
equation for the transition temperature is corrected for
correlations of the impurities. Possible applications of the new
equation are discussed.