Large magnetic gap at the Dirac point in Bi2Te3/MnBi2Te4 heterostructures

E.D.L. Rienks, S. Wimmer, J. Sanchez-Barriga, Ondřej Caha, P.S. Mandal, J. Ruzicka, H. Steiner, V.V. Volobuev, H. Groiss, Mihaela Albu, Gerald Kothleitner, J. Michalicka, S.A. Kahn, J. Minar, H. Ebert, G. Bauer, F. Freyse, A. Varykhalov, O. Rader^*, Günter Springholz^*