Electron transmission through bilayer graphene: A time-dependent first-principles study

Incident-energy-dependent electron transmittances through single-layer graphene (SLG) and bilayer graphene (BLG) were investigated using time-dependent density functional theory. The transmittances of BLG with two kinds of stacking exhibit an unexpected crossing at a certain incident electron energy...

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Bibliographic Details
Published in:Physical review. B 2017-03, Vol.95 (12), p.125425, Article 125425
Main Authors: Miyauchi, Hironari, Ueda, Yoshihiro, Suzuki, Yasumitsu, Watanabe, Kazuyuki
Format: Article
Language:English
Subjects:
Bilayers
Density functional theory
Diffraction patterns
Electron energy
Electrons
Energy transmission
First principles
Graphene
Time dependence
Transmission electron diffraction
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Summary:Incident-energy-dependent electron transmittances through single-layer graphene (SLG) and bilayer graphene (BLG) were investigated using time-dependent density functional theory. The transmittances of BLG with two kinds of stacking exhibit an unexpected crossing at a certain incident electron energy. The behavior is preserved for the BLG with reduced or increased layer distances compared to that of typical BLG. We determined the origin of the crossing by investigating transmission electron diffraction patterns for SLG.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.95.125425