Fermi arc mediated transport in an inversion symmetry broken Weyl semimetal nanowire and its hybrid junctions

The emergence of gapless surface states, known as Fermi arcs (FAs), is one of the unique properties of the novel topological Weyl semimetal (WSM). However, extracting the signatures of FAs from the bulk states has always been a challenge as both of them are gapless in nature and connected to each other. We capture the signatures of FAs via transport in an inversion symmetry broken WSM. We study the band structure and the properties of FAs such as shape, and spin polarization considering slab and nanowire (NW) geometry, and then compute the two-terminal conductance in WSM NWs in terms of the scattering coefficients within the Landauer formalism. We find the FA-mediated conductance to be quantized in units of 2e^2/h. We extend our study to transport in the WSM/Weyl superconductor NW hybrid junction using the Blonder-Tinkham-Klapwijk formalism. We show that due to the intricate spin textures, the signatures of the FAs can be captured via the Andreev reflection process. We also show that our results of conductance are robust against delta-correlated quenched disorder and thus enhance the experimental feasibility.