title: Complex spin texture in the pure and Mn-doped topological insulator Bi2Te3.
abstract: Topological insulators are characterized by the presence of spin-momentum-locked surface states with Dirac points that span the fundamental bulk band gap. We show by first-principles calculations that the surface state of the insulator Bi2Te3 survives upon moderate Mn doping of the surface layers. The spin texture of both undoped and Mn-doped Bi2Te3 is much more complicated than commonly believed, showing layer-dependent spin reversal and spin vortices.
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120, Halle, Germany. juergen.henk@physik.uni-halle.de
authors.forename: J
authors.initials: J
authors.lastname: Henk
authors.forename: A
authors.initials: A
authors.lastname: Ernst
authors.forename: S V
authors.initials: SV
authors.lastname: Eremeev
authors.forename: E V
authors.initials: EV
authors.lastname: Chulkov
authors.forename: I V
authors.initials: IV
authors.lastname: Maznichenko
authors.forename: I
authors.initials: I
authors.lastname: Mertig