Topological hybrid semimetal phases and anomalous Hall effects in a three dimensional magnetic topological insulator
arXiv:2108.06994 · doi:10.1088/1674-1056/abff29
Abstract
In this work, we propose a ferromagnetic BiSe as 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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