Matches in SemOpenAlex for { <https://semopenalex.org/work/W3101804517> ?p ?o ?g. }
- W3101804517 abstract "In this paper, we theoretically investigate plasmon propagation characteristics in AB and AA stacked bilayer graphene (BLG) in the presence of energy asymmetry due to an electrostatic field oriented perpendicularly to the plane of the graphene sheet. We first derive the optical conductivity of BLG using the Kubo formalism incorporating energy asymmetry and finite electron scattering. All results are obtained for room temperature (300 K) operation. By solving Maxwell's equations in a dual gate device setup, we obtain the wavevector of propagating plasmon modes in the transverse electric (TE) and transverse magnetic (TM) directions at terahertz frequencies. The plasmon wavevector allows us to compare the compression factor, propagation length, and the mode confinement of TE and TM plasmon modes in bilayer and monolayer graphene sheets and also to study the impact of material parameters on plasmon characteristics. Our results show that the energy asymmetry can be harnessed to increase the propagation length of TM plasmons in BLG. AA stacked BLG shows a larger increase in the propagation length than AB stacked BLG; conversely, it is very insensitive to the Fermi level variations. Additionally, the dual gate structure allows independent modulation of the energy asymmetry and the Fermi level in BLG, which is advantageous for reconfiguring plasmon characteristics post device fabrication." @default.
- W3101804517 created "2020-11-23" @default.
- W3101804517 creator A5022074546 @default.
- W3101804517 creator A5041129182 @default.
- W3101804517 date "2017-10-17" @default.
- W3101804517 modified "2023-10-18" @default.
- W3101804517 title "Voltage tunable plasmon propagation in dual gated bilayer graphene" @default.
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- W3101804517 doi "https://doi.org/10.1063/1.5007713" @default.
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