Unusual mechanism of vortex viscosity generated by mixed normal modes in superconductors with broken time reversal symmetry

Abstract

We show that under certain conditions multiband superconductors with broken time-reversal symmetry have a new vortex viscosity-generating mechanism which is different from that in conventional superconductors. It appears due to the existence of mixed superfluid phase-density mode inside vortex core. This new contribution is dominant near the time reversal symmetry breaking phase transition. The results could be relevant for three band superconductor $B{a}_{1-x}{K}_{x}F{e}_{2}A{s}_2$.

7 pages, 2 figures

References in corpus (3)

• Pairing State with a time-reversal symmetry breaking in FeAs based superconductors
• s+is State with Broken Time Reversal Symmetry in Fe-Based Superconductors
• Chiral CP^2 skyrmions in three-band superconductors

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