Robust three-dimensional type-II Dirac semimetal state in SrAgBi

Abstract Topological semimetals such as Dirac, Weyl or nodal line are widely studied for their peculiar properties including high Fermi velocities, small effective masses and magnetoresistance. When the Dirac cone is tilted, exotic phenomena could emerge whereas materials hosting states promising photonics plasmonics applications. Here we present evidence that SrAgBi a spin-orbit coupling-induced type-II three-dimensional semimetal featuring tilted at energy. Near charge compensation surface characteristics not much perturbed by 7% of vacancy defects on Ag atomic site, suggesting be material interest observation robust optical spintronic topological quantum phenomena.