Title
Landau-level dispersion and the quantum Hall plateaus in bilayer graphene Landau-level dispersion and the quantum Hall plateaus in bilayer graphene
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
conferenceObject
Publication
New York ,
Subject
Physics
Source (journal)
AIP conference proceedings / American Institute of Physics. - New York
Volume/pages
1566(2013) , p. 275-276
ISSN
0094-243X
ISI
000331793000137
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We study the quantum Hall effect (QHE) in bilayer graphene using the Kubo-Greenwood formula. At zero temperature the Hall conductivity sigma(yx) is given by sigma(yx) - 4(N + 1)e(2)/h with N the index of the highest occupied Landau level (LL). Including the dispersion of the LLs and their width, due to e. g. scattering by impurities, produces the plateau of the n = 0 LL in agreement with experimental results on doped samples and similar theoretical results on single-layer graphene plateaus widen with impurity concentration. Further, the evaluated resistivity rho(xx) exhibits a strong, oscillatory dependence on the electron concentration. Explicit results are obtained for delta-function impurities.
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/883e8e/115871.pdf
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