期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.106801
关键词
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资金
- European Research Council
- Simons Research Foundation
- Engineering and Physical Sciences Research Council [EP/G041954/1] Funding Source: researchfish
- EPSRC [EP/G041954/1] Funding Source: UKRI
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 observable properties. A remarkable example of the SCI is bilayer graphene which is shown to be tunable between the SCI and usual weak coupling regime.
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