Suppression of spontaneous supercurrents in a chiral p-wave superconductor

The superconducting state of strontium ruthenate (SRO) is widely believed to have chiral p-wave order that breaks time-reversal symmetry. Such a state is expected to have a spontaneous magnetization, both at sample edges and at domain walls between regions of different chirality. Indeed, muon spin-resonance experiments are interpreted as evidence of spontaneous magnetization due to domain walls or defects in the bulk. However, recent …