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arXiv · 0905.0625

Broken Time-reversal Symmetry in Josephson Junction with an Anderson impurity and multi band superconductors

Y. Avishai·T. K. Ng
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Abstract

A Josephson junction consisting of an Anderson impurity weakly coupled with two-band and single-band superconductors exposes a time reversal breaking ground state when the coupling between the two bands exceeds a certain threshold. The critical regime occurs around local moment formation. This indicates a fundamental and distinct role of strong correlations: Driving a system into a time reversal breaking ground state. One of the observable consequences is that the impurity magnetization in this phase is reduced.

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Y. Avishai, T. K. Ng. 2009-05-13. Broken Time-reversal Symmetry in Josephson Junction with an Anderson impurity and multi band superconductors. https://doi.org/10.1103/physrevb.81.104501

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