Influence of electric fields on absorption spectra of AAB-stacked trilayer graphene
نویسندگان
چکیده
منابع مشابه
Raman characterization of ABA- and ABC-stacked trilayer graphene.
Bernal (ABA stacking order) and rhombohedral (ABC) trilayer graphene (3LG) are characterized by Raman spectroscopy. From a systematic experimental and theoretical analysis of the Raman modes in both of these 3LGs, we show that the G band, G' (2D) band, and the intermediate-frequency combination modes of 3LGs are sensitive to the stacking order of 3LG. The phonon wavevector q, that gives the dou...
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We study the Landau level spectrum of ABAand ABC-stacked trilayer graphene. We derive analytic lowenergy expressions for the spectrum, the validity of which is confirmed by comparison to a π -band tight-binding calculation of the density of states on the honeycomb lattice. We further study the effect of a perpendicular electric field on the spectrum, where a zero-energy plateau appears for ABC ...
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We calculate the electronic band structure of ABA-stacked trilayer graphene in the presence of external gates, using a self-consistent Hartree approximation to take account of screening. In the absence of a gate potential, there are separate pairs of linear and parabolic bands at low energy. A gate field perpendicular to the layers breaks mirror reflection symmetry with respect to the central l...
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AA-stacked graphite shows strong anisotropy in geometric structures and velocity matrix elements. However, the absorption spectra are isotropic for the polarization vector on the graphene plane. The spectra exhibit one prominent plateau at middle energy and one shoulder structure at lower energy. These structures directly reflect the unique geometric and band structures and provide sufficient i...
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ژورنال
عنوان ژورنال: Applied Physics Express
سال: 2016
ISSN: 1882-0778,1882-0786
DOI: 10.7567/apex.9.065103