Generic miniband structure of graphene on a hexagonal substrate

By J. Wallbank, Aavishkar A. Patel, M. Mucha-Kruczyński, A.K. Geim, Vladimir Fal'ko. 2012

212 citations recorded by the source corpus.

Using a general symmetry-based approach, we provide a classification of generic miniband structures for electrons in graphene placed on substrates with the hexagonal Bravais symmetry. In particular, we identify conditions at which the first moire miniband is separated from the rest of the spectrum by either one or a group of three isolated mini Dirac points and is not obscured by dispersion surfaces coming from other minibands. In such cases, the Hall coefficient exhibits two distinct alternations of its sign as a function of charge carrier density.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/c5211778982af4b6f9d3ae101552189f532c3d26

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Novel effects of strains in graphene and other two dimensional materials (2015, methodology): “[351] JR Wallbank, AA Patel, M Mucha-Kruczyński, AK Geim, and VI Fal’ko.”
Resonantly hybridized excitons in moiré superlattices in van der Waals heterostructures (2019, background): “The moiré superlattice effects on the band structure [9, 10] and exciton energies [7] of bilayer systems, produced by incommensurability and misalignment of the two lattices, are often described in terms of a minimal harmonic potential [11–13].”
Interlayer interaction in general incommensurate atomic layers (2015, background): “The electronic structure in graphene-hBN system was theoretically studied [22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35], and the recent transport measurements revealed remarkable effects such as the formation of mini-Dirac bands and the fractal subband structure in magnetic fields [36, 18”