Signatures of van Hove singularities in the anisotropic in-plane optical conductivity of the topological semimetal Nb${}_3$SiTe${}_6$

J. Ebad-Allah, A. A. Tsirlin, Y. L. Zhu +2

We present a temperature-dependent infrared spectroscopy study on the layered topological semimetal Nb${}_3$SiTe${}_6$ combined with density-functional theory (DFT) calculations of the…