Signatures of two- and three-dimensional semimetals from circular dichroism
Signatures of two- and three-dimensional semimetals from circular dichroism
Topological invariants are crucial quantities for classifying materials with topological phases. Hence, their connections with experimentally measurable quantities are extremely important. In this context, circular dichroism (CD) provides a protocol to detect the Chern number [Formula: see text] of the lowest energy Bloch band (LBB) of a semimetal. This hinges …