Understanding the correlation effects in unconventional topological materials, which fermion excitations take unusual dispersion, is an important topic recent condensed matter physics. We study influence of short-range four-fermion interactions on three-dimensional semi-Dirac semimetal with dispersion that linear along two directions and quadratic third one. Based renormalization group theory, ...

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-induc...

Topological materials have attracted considerable experimental and theoretical attention. They exhibit strong spin-orbit coupling both in the band structure (intrinsic) and in the impurity potentials (extrinsic), although the latter is often neglected. In this work, we discuss weak localization and antilocalization of massless Dirac fermions in topological insulators and massive Dirac fermions ...