ANISOTROPY OF THE ENERGY GAP IN SUPERCONDUCTING LEAD–BISMUTH ALLOYS

Abstract

Tunneling techniques have been applied to a study of the remanent anisotropy of the energy gap in superconducting Pb–Bi alloys. The relationship between anisotropy and mean free path L is discussed for situations in which L is well inside the "dirty" superconductor limit (L ~ ξ₀).