Transport through Nodal Surface Semimetal - Superconductor junction in presence or absence of light irradiation

Abstract: We study quantum tunelling via $s$-wave superconductor (SC) junction with a topologically charged nodal surface semimetal (NSSM) where a nonsymmorphic symmetry forces the nodal surfaces to stick to the BZ boundary. Due to their unique dispersions close to the two dimensional band crossing, the charge carriers in the NSSM display interesting behavior in the nature of Andreev as well as normal reflections at the SC junction interface, for both subgap and supergap energies. We investigate such behaviors for different incident orientations. Furthermore, we also consider irradiation via light with circular and linear polarization on such systems and probe the stroboscopic temporal evolution of the transport parameters. In particular, we follow a Floquet approach in the limit of high frequency irradiation and witness there many unusal Andreev transport behavior to unfold.