Magnetic pair breaking in disordered superconducting films

T. P. Devereaux; D. Belitz

doi:10.1103/PhysRevB.53.359

← Back to search

Magnetic pair breaking in disordered superconducting films

T. P. Devereaux, D. Belitz

DOI 10.1103/PhysRevB.53.359 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

A theory for the effects of nonmagnetic disorder on the magnetic pair-breaking rate α induced by paramagnetic impurities in quasi-two-dimensional superconductors is presented. Within the framework of a strong-coupling theory for disordered superconductors, we find that the disorder dependence of α is determined by the disorder enhancements of both the electron-phonon coupling and the spin-flip scattering rate. These two effects have a tendency to cancel each other. With parameter values appropriate for Pb0.9Bi0.1, we find a pair-breaking rate that is very weakly dependent on disorder for sheet resistances 0<R□≲2.5 kΩ, in agreement with a recent experiment by Chervenak and Valles. © 1996 The American Physical Society.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb0.9Bi0.1 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	6	Pressure not reported	midpoint
Pb0.9Bi0.1 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.35	Pressure not reported	midpoint