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Topological Quantum Computing

Engineering of the topological magnetic moment of electrons in bilayer graphene using strain and electrical bias

arXiv
Authors: Christian Moulsdale, Angelika Knothe, Vladimir Fal'ko

Year

2019

Paper ID

14692

Status

Preprint

Abstract Read

~2 min

Abstract Words

100

Citations

N/A

Abstract

Topological properties of electronic states in multivalley two-dimensional materials, such as mono- and bilayer graphene, or thin films of rhombohedral graphite, give rise to various unusual magneto-transport regimes. Here, we investigate the tunability of the topological magnetic moment (related to the Berry curvature) of electronic states in bilayer graphene using strain and vertical bias. We show how one can controllably vary the valley g-factor of the band-edge electrons, gv^*, across the range 10 < |gv^*| < 200, and we discuss the manifestations of the topological magnetic moment in the anomalous contribution towards the Hall conductivity and in the Landau level spectrum.

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  • Topological properties of electronic states in multivalley two-dimensional materials, such as mono- and bilayer graphene, or thin films of rhombohedral graphite, give rise to...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1911.08343 [2] arXiv https://arxiv.org/abs/1911.08343 [3] Publisher https://arxiv.org/abs/1911.08343

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