Abstract:
In this article, we investigate non-trivial topological features in a heterostructure of extreme
magnetoresistance (XMR) materials LaAs and LaBi using density functional theory. The
proposed heterostructure is found to be dynamically stable and shows bulk band inversion with
non-trivial Z2 topological invariant and a Dirac cone at the surface. In addition, its electron and
hole carrier densities ratio is also calculated to investigate the possibility to possess XMR
effect. Electrons and holes in the heterostructure are found to be nearly compensated, thereby
facilitating it to be a suitable candidate for XMR studies.
