title: Electrically tunable quantum anomalous Hall effect in graphene decorated by 5d transition-metal adatoms.
abstract: Based on first-principles calculations, we predict that 5d transition metals on graphene present a unique class of hybrid systems exhibiting topological transport effects that can be manipulated effectively by external electric fields. The origin of this phenomenon lies in the exceptional magnetic properties and the large spin-orbit interaction of the 5d metals leading to significant magnetic moments accompanied with colossal magnetocrystalline anisotropy energies. A strong magnetoelectric response is predicted that offers the possibility to switch the spontaneous magnetization direction by moderate electric fields, enabling an electrically tunable quantum anomalous Hall effect.
authors.affiliation: Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, D-52425 Jülich, Germany. h.zhang@fz-juelich.de
authors.forename: Hongbin
authors.initials: H
authors.lastname: Zhang
authors.forename: Cesar
authors.initials: C
authors.lastname: Lazo
authors.forename: Stefan
authors.initials: S
authors.lastname: Blügel
authors.forename: Stefan
authors.initials: S
authors.lastname: Heinze
authors.forename: Yuriy
authors.initials: Y
authors.lastname: Mokrousov