Generic miniband structure of graphene on a hexagonal substrate

Wallbank, John and Patel, A. A. and Mucha-Kruczynski, Marcin and Geim, A. K. and Falko, Vladimir (2013) Generic miniband structure of graphene on a hexagonal substrate. Physical review B, 87 (24). ISSN 1098-0121

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
Additional Information:
©2013 American Physical Society
ID Code:
65447
Deposited By:
Deposited On:
29 Jun 2013 15:00
Refereed?:
Yes
Published?:
Published
Last Modified:
05 Jul 2020 03:44