Time-reversal symmetry breaking state in dirty three-band superconductor

Abstract

I study the effects of disorder on the superconductivity of a three-band model with repulsive interband pairing. Such a model can support several possible superconducting order parameters, including a complex time-reversal symmetry breaking (TRSB) state. Impurity scattering suppresses the critical temperature of all these states, but the complex state survives, and remains a part of the phase diagram of the model even in the presence of moderate amount of disorder. This means that the TRSB states could be experimentally accessible in multiband materials like iron pnictides and chalcogenides.

7 pages, 6 figures, invited paper in Focus on Multicomponent Superconductivity, special issue of Superconductor Science and Technology

References in corpus (16)

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Cited by in corpus (6)

• Emergent phenomena in multicomponent superconductivity: an introduction to the focus issue
• Proximity and Josephson effects in microstructures based on multiband superconductors
• Anomalous diamagnetic response in multi-band superconductors with time-reversal broken symmetry
• Effect of hybridization symmetry on topological phases of odd-parity multiband superconductors
• Edge currents in frustrated Josephson junction ladders
• Ginzburg-Landau surface energy of multiband superconductors: Derivation and application to selected systems