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Surface states and Rashba-type spin polarization in antiferromagnetic MnBi2Te4 (0001)

AuthorsVidal, R. C.; Bentmann, Hendrik; Peixoto, T. R. F.; Zeugner, Alexander; Moser, S.; Min, C. H.; Schatz, S.; Kißner, K.; Ünzelmann, M.; Fornari, C. I.; Vasili, Hari Babu; Valvidares, Manuel; Sakamoto, K.; Fujii, J.; Vobornik, Ivana; Jung, S.; Cacho, Cephise; Kim, T. K.; Koch, Roland J.; Jozwiak, C; Bostwick, A.; Denlinger, J. D.; Rotenberg, E.; Buck, J.; Hoesch, M.; Diekmann, F.; Rohlf, S.; Kalläne, M.; Rossnagel, K.; Otrokov, M. M.; Chulkov, Eugene V. ; Ruck, M.; Isaeva, A.; Reinert, F.
Issue Date2019
CitationPhysical Review B 100 (2019)
AbstractThe layered van der Waals antiferromagnet MnBi2Te4 has been predicted to combine the band ordering of archetypical topological insulators such as Bi2Te3 with the magnetism of Mn, making this material a viable candidate for the realization of various magnetic topological states. We have systematically investigated the surface electronic structure of MnBi2Te4(0001) single crystals by use of spin- and angle-resolved photoelectron spectroscopy experiments. In line with theoretical predictions, the results reveal a surface state in the bulk band gap and they provide evidence for the influence of exchange interaction and spin-orbit coupling on the surface electronic structure.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.100.121104
Identifiersdoi: 10.1103/PhysRevB.100.121104
e-issn: 2469-9969
issn: 2469-9950
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