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arXiv · 1308.6287

Proximity effect in graphene-topological insulator heterostructures

Junhua Zhang·C. Triola·E. Rossi
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Abstract

We formulate a continuum model to study the low-energy electronic structure of heterostructures formed by graphene on a strong three-dimensional topological insulator (TI) for the case of both commensurate and incommensurate stacking. The incommensurability can be due to a twist angle between graphene and the TI surface or a lattice mismatch between the two systems. We find that the proximity of the TI induces in graphene a strong enhancement of the spin-orbit coupling that can be tuned via the twist angle.

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Junhua Zhang, C. Triola, E. Rossi. 2014-03-17. Proximity effect in graphene-topological insulator heterostructures. https://doi.org/10.1103/physrevlett.112.096802

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