title: Large-Chern-number quantum anomalous Hall effect in thin-film topological crystalline insulators.
abstract: We theoretically predict that thin-film topological crystalline insulators can host various quantum anomalous Hall phases when doped by ferromagnetically ordered dopants. Any Chern number between ±4 can, in principle, be reached as a result of the interplay between (a) the induced Zeeman field, depending on the magnetic doping concentration, (b) the structural distortion, either intrinsic or induced by a piezoelectric material through the proximity effect, and (c) the thickness of the thin film. We propose a heterostructure to realize quantum anomalous Hall phases with Chern numbers that can be tuned by electric fields.
authors.affiliation: Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA and Department of Physics, Princeton University, Princeton, New Jersey 08544, USA and Micro and Nanotechnology Laboratory, University of Illinois, Urbana, Illinois 61801, USA.
authors.forename: Chen
authors.initials: C
authors.lastname: Fang
authors.affiliation: Department of Electrical and Computer Engineering, University of Illinois, Urbana, IIllinois 61801, USA and Micro and Nanotechnology Laboratory, University of Illinois, Urbana, Illinois 61801, USA.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Gilbert
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: B Andrei
authors.initials: BA
authors.lastname: Bernevig