Generic miniband structure of graphene on a hexagonal substrate

J. R. Wallbank, A. A. Patel, Marcin Mucha-Kruczynski, A. K. Geim, V. I. Fal'ko

Research output: Contribution to journalArticle

131 Citations (Scopus)

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 moiré 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.
Original languageEnglish
Article number245408
Number of pages7
JournalPhysical Review B
Volume87
Issue number24
DOIs
Publication statusPublished - 4 Jun 2013

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