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  • Title: Topological hybrid semimetal phases and anomalous Hall effects in a three dimensional magnetic topological insulator.
    Author: Chen MN, Chen WC, Zhou Y.
    Journal: J Phys Condens Matter; 2021 Oct 28; 34(2):. PubMed ID: 34636339.
    Abstract:
    In this work, we propose a ferromagnetic Bi2Se3as a candidate to hold the coexistence of Weyl- and nodal-line semimetal phases, which breaks the time reversal symmetry. We demonstrate that the type-I Weyl semimetal phase, type-I-, type-II- and their hybrid nodal-line semimetal phases can arise by tuning the Zeeman exchange field strength and the Fermi velocity. Their topological responses under U(1) gauge field are also discussed. Our results raise a new way for realizing Weyl and nodal-line semimetals and will be helpful in understanding the topological transport phenomena in three-dimensional material systems.
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