Asymmetric edge supercurrents in MoTe Josephson junctions.

To investigate the higher order topology in MoTe, the supercurrent interference phenomena in Nb/MoTe/Nb planar Josephson junctions have been systematically studied. By analyzing the obtained interference pattern of the critical supercurrents and performing a comparative study of the edge-touched and untouched junctions, it's found that the supercurrent is dominated by the edges, rather than the bulk or surfaces of MoTe. An asymmetric Josephson effect with a field-tunable sign is also observed, indicating the nontrivial origin of the edge states.