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

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.

5 pages

References in corpus (3)

• A minimal two-band model for the superconducting Fe-pnictides
• Spin-triplet p-wave pairing in a 3-orbital model for iron pnictide superconductors
• In-gap bound states and tunneling conductance of multiband superconductors through a normal/superconductor/superconductor junction

Cited by in corpus (2)

• Anomalous Josephson current, incipient time-reversal symmetry breaking, and Majorana bound states in interacting multi-level dots
• Detecting Topological Superconductivity with ${\phi }_0$ Josephson Junctions