Multi-component order parameter superconductivity of Sr${}_2$RuO${}_4$ revealed by topological junctions

M. S. Anwar, R. Ishiguro, T. Nakamura +4

Single crystals of the Sr${}_2$RuO${}_4$-Ru eutectic system are known to exhibit enhanced superconductivity at 3~K, in addition to the bulk superconductivity of Sr${}_2$RuO${}_4$ at 1.5~K.…