Charge-2e Superconductivity from a Disordered Pair Density Wave.

Authors

Julian May-Mann, Akshat Pandey, Zhengyan Darius Shi, Steven A Kivelson

Published in

Physical review letters. Volume 137. Issue 11. Pages 116003. Sep 11, 2026.

Abstract

We investigate the effects of disorder on a system that in the clean limit is a pair density wave (PDW) superconductor. The charge order of the clean PDW is inevitably lost (via Imry-Ma), but the fate of the superconducting order is less clear. Here, we consider a strongly inhomogeneous limit in which the system consists of a random collection of PDW puddles embedded in a metallic background. When the puddles are dilute, they become phase coherent at low temperatures, resulting in a state that is macroscopically equivalent to a charge-2e s-wave superconductor. This is a mechanism by which a PDW can have zero resistance, even in the presence of disorder, and is thermodynamically distinct from the "vestigial" charge-4e superconductivity that has been proposed to arise in weakly disordered PDWs.

PMID:
42789891
Bibliographic data and abstract were imported from PubMed on 26 Sep 2026.

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