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Tunable Strongly Correlated Band Insulator

Strongly Correlated Electrons 2018-01-01 v1 Mesoscale and Nanoscale Physics
Authors: V. V. Cheianov , I. L. Aleiner , V. I. Fal'ko
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Abstract

We introduce the notion of the strongly correlated band insulator (SCI), where the lowest energy excitations are collective modes (excitons) rather than the single particles. We construct controllable 1/N expansion for SCI to describe their observables properties. A remarkable example of the SCI is bilayer graphene which is shown to be tunable between the SCI and usual weak coupling regime.

Cite

@article{arxiv.1107.4750,
  title  = {Tunable Strongly Correlated Band Insulator},
  author = {V. V. Cheianov and I. L. Aleiner and V. I. Fal'ko},
  journal= {arXiv preprint arXiv:1107.4750},
  year   = {2018}
}

Comments

4 pages, 4 figures

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