Electrically Tunable Quantum Anomalous Hall Effect in Graphene Decorated by 5d Transition-Metal Adatoms

Zhang, H.; Blügel, S.; Heinze, S.; Lazo, C.; Mokrousov, Y.

doi:10.1103/PhysRevLett.108.056802

Journal Article

PreJuSER-20231

Electrically Tunable Quantum Anomalous Hall Effect in Graphene Decorated by 5d Transition-Metal Adatoms

Zhang, H.FZJ* ; Lazo, C. ; Blügel, S.FZJ* ; Heinze, S. ; Mokrousov, Y.FZJ*

2012
APS College Park, Md.

Physical review letters 108, 056802 (2012) [10.1103/PhysRevLett.108.056802]

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Please use a persistent id in citations: http://hdl.handle.net/2128/7430 doi:10.1103/PhysRevLett.108.056802

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.

Keyword(s): J

Classification:

Physics, Multidisciplinary

Note: We acknowledge discussions with Mojtaba Alaei, Frank Freimuth, Klaus Koepernik, Pengxiang Xu, Tobias Burnus, Gustav Bihlmayer, Marjana Lezaic, and Nicolae Atodiresei. This work was supported by the HGF-YIG Programme VH-NG-513 and by the DFG through Research Unit 912 and Grant No. HE3292/7-1. Computational resources were provided by the Julich Supercomputing Centre and the North-German Supercomputing Alliance (HLRN).

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