Rights statement: © 2007 The American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Influence of trigonal warping on interference effects in bilayer graphene
AU - Kechedzhi, K.
AU - Falko, Vladimir I.
AU - McCann, E.
AU - Altshuler, B. L.
N1 - © 2007 The American Physical Society
PY - 2007/4/27
Y1 - 2007/4/27
N2 - Bilayer graphene (two coupled graphitic monolayers arranged according to Bernal stacking) is a two-dimensional gapless semiconductor with a peculiar electronic spectrum different from the Dirac spectrum in the monolayer material. In particular, the electronic Fermi line in each of its valleys has a strong p -> -p asymmetry due to trigonal warping, which suppresses the weak localization effect. We show that weak localization in bilayer graphene may be present only in devices with pronounced intervalley scattering, and we evaluate the corresponding magnetoresistance.
AB - Bilayer graphene (two coupled graphitic monolayers arranged according to Bernal stacking) is a two-dimensional gapless semiconductor with a peculiar electronic spectrum different from the Dirac spectrum in the monolayer material. In particular, the electronic Fermi line in each of its valleys has a strong p -> -p asymmetry due to trigonal warping, which suppresses the weak localization effect. We show that weak localization in bilayer graphene may be present only in devices with pronounced intervalley scattering, and we evaluate the corresponding magnetoresistance.
KW - FLUCTUATIONS
KW - MAGNETORESISTANCE
KW - ELECTRON-GAS
KW - WELLS
KW - LOW-TEMPERATURES
KW - CONDUCTION
KW - ANTILOCALIZATION
KW - INVERSION-LAYERS
KW - WEAK-LOCALIZATION
KW - FILMS
U2 - 10.1103/PhysRevLett.98.176806
DO - 10.1103/PhysRevLett.98.176806
M3 - Journal article
VL - 98
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 17
M1 - 176806
ER -