Rights statement: ©2013 American Physical Society
Final published version, 1.59 MB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Generic miniband structure of graphene on a hexagonal substrate
AU - Wallbank, John
AU - Patel, A. A.
AU - Mucha-Kruczynski, Marcin
AU - Geim, A. K.
AU - Falko, Vladimir
N1 - ©2013 American Physical Society
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 moire miniband is separated from the rest of the spectrum by either one or a groupof 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 moire miniband is separated from the rest of the spectrum by either one or a groupof 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.
U2 - 10.1103/PhysRevB.87.245408
DO - 10.1103/PhysRevB.87.245408
M3 - Journal article
VL - 87
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 24
M1 - 245408
ER -