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Symmetry of Electron Bands in Graphene: (Nearly) Free Electron Versus Tight-Binding

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Kogan,  Eugene
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Kogan, E., & Silkin, V. M. (2021). Symmetry of Electron Bands in Graphene: (Nearly) Free Electron Versus Tight-Binding. Physica Status Solidi B, 2000504. doi:10.1002/pssb.202000504.


Cite as: http://hdl.handle.net/21.11116/0000-0007-F64B-0
Abstract
The symmetry labeling of all electron bands in graphene obtained by combining numerical band calculations and analytical analysis based on group theory is presented. The latter is performed both in the framework of the (nearly) free electron model, or in the framework of the tight-binding model. The predictions about relative positions of the bands which can be made on the basis of each of the models just using the group theory (and additional simple qualitative arguments, if necessary) are complimentary.