TY - JOUR
T1 - Generic miniband structure of graphene on a hexagonal substrate
AU - Wallbank, J. R.
AU - Patel, A. A.
AU - Mucha-Kruczynski, Marcin
AU - Geim, A. K.
AU - Fal'ko, V. I.
PY - 2013/6/4
Y1 - 2013/6/4
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84879005610&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1103/PhysRevB.87.245408
U2 - 10.1103/PhysRevB.87.245408
DO - 10.1103/PhysRevB.87.245408
M3 - Article
VL - 87
JO - Physical Review B : Condensed Matter and Materials Physics
JF - Physical Review B : Condensed Matter and Materials Physics
SN - 1098-0121
IS - 24
M1 - 245408
ER -