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CONDENSED MATTER
Vanadium-containing planar heterostructures based on topological insulators
E. K. Petrovab, I. V. Silkinb, V. M. Kuznetsovb, T. V. Menshchikovab, E. V. Chulkovacb a St. Petersburg State University, St. Petersburg, 198504 Russia
b National Research Tomsk State University, Tomsk, 634050 Russia
c Departamento de Polímeros y Materiales Avanzados: Física, Química y Tecnología, Facultad de Ciencias Químicas,
Universidad del País Vasco UPV/EHU, 20080 San Sebastían/Donostia, Basque Country, Spain
Abstract:
Vanadium-containing heterostructures consisting of an ultrathin magnetic film on the surface of a nonmagnetic topological insulator have been studied theoretically. A method has been demonstrated to control the Dirac point shift in the $k$ space, which is a length measure of an exotic flat band appearing upon the formation of domain walls on the surface of antiferromagnetic topological insulator. The Dirac point shift is inversely proportional to the group velocity of electrons at the Dirac point and is proportional to the degree of localization of the topological state in the magnetic film. The shift is controlled by selecting a substrate with a certain work function. Particular systems have been proposed for the experimental study of flat band features in antiferromagnetic topological insulators.
Received: 07.12.2022 Revised: 22.12.2022 Accepted: 23.12.2022
Citation:
E. K. Petrov, I. V. Silkin, V. M. Kuznetsov, T. V. Menshchikova, E. V. Chulkov, “Vanadium-containing planar heterostructures based on topological insulators”, Pis'ma v Zh. Èksper. Teoret. Fiz., 117:3 (2023), 235–241; JETP Letters, 117:3 (2023), 228–233
Linking options:
https://www.mathnet.ru/eng/jetpl6864 https://www.mathnet.ru/eng/jetpl/v117/i3/p235
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