Reentrant localization of single-particle transport in disordered Andreev wires
N. B. Kopnin, A. S. Mel’nikov, V. M. Vinokur
DOI 10.1103/PhysRevB.70.075310 · Physical Review B
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Abstract
We study effects of disorder on the low energy single-particle transport in a normal wire surrounded by a superconductor. In addition to the Andreev diffusion that decreases with increase in the mean free path ℓ, the heat conductance is found to include the diffusive drift produced by a small particle-hole asymmetry, which increases with increasing ℓ. The conductance thus has a minimum as a function of ℓ leading to a peculiar reentrant localization as a function of the mean free path.
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