First principle calculation of the effective Zeeman's couplings in topological materials
Abstract
In this paper, we propose a first principle calculation method for the effective Zeeman's coupling based on the second perturbation theory and apply it to a few topological materials. For Bi and Bi2Se3, our numerical results are in good accord with the experimental data; for Na3Bi, TaN, and ZrTe5, the structure of the multi-bands Zeeman's couplings are discussed. Especially, we discuss the impact of Zeeman's coupling on the Fermi surface's topology in Na3Bi in detail.
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