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Disorder-enabled time reversal symmetry breaking in twisted superconductors

Published on:

29 August 2023

Primary Category:

Statistical Mechanics

Paper Authors:

Andrew C. Yuan

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Key Details

Develops an exactly solvable model of disordered, twisted superconducting bilayers

Proves disorder can induce spontaneous time reversal symmetry breaking

Symmetry breaking persists up to the superconducting transition temperature

Suggests possibility of high temperature topological superconductivity

AI generated summary

Disorder-enabled time reversal symmetry breaking in twisted superconductors

This paper develops a solvable model to show that random disorder in the coupling between twisted superconducting layers can induce time reversal symmetry breaking. At a critical twist angle, the disorder generates an effective interaction that favors a phase difference of pi/2 between the layers. Exact calculations prove this occurs below the superconducting transition temperature, suggesting the possibility of high temperature topological superconductivity.

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