← Back to search

Weak localization of disordered quasiparticles in the mixed superconducting state

R. Bundschuh, C. Cassanello, D. Serban, M. R. Zirnbauer

DOI 10.1103/PhysRevB.59.4382 · 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

Starting from a random-matrix model, we construct the low-energy effective-field theory for the noninteracting gas of quasiparticles of a disordered superconductor in the mixed state. The theory is a nonlinear σ model, with the order-parameter field being a supermatrix whose form is determined solely on symmetry grounds. The weak-localization correction to the field-axis thermal conductivity is computed for a dilute array of s-wave vortices near the lower critical field Hc1. We propose that weak-localization effects, cut off at low temperatures by the Zeeman splitting, are responsible for the field dependence of the thermal conductivity seen in recent high-Tc experiments by Aubin et al.

Similar papers