Direct evidence of induced magnetic moment in Se and the role of misplaced Mn in
MnBi2Se4
-based intrinsic magnetic topological insulator heterostructures
R. Fukushima, V. N. Antonov, M. M. Otrokov, T. T. Sasaki, R. Akiyama, K. Sumida, K. Ishihara, S. Ichinokura, K. Tanaka, Y. Takeda, D. P. Salinas, S. V. Eremeev, E. V. Chulkov, A. Ernst, T. Hirahara.