TY - JOUR
T1 - Plasmon Dynamics in Electron-Doped Graphene and AA- versus AB-Stacked Bilayer Graphene
AU - Liu, Chang Ting
AU - Lin, Chiun Yan
AU - Chiu, Chih Wei
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024/10
Y1 - 2024/10
N2 - This study investigates low-frequency plasmons and single-particle excitations (SPEs) in monolayer and bilayer graphene with various stacking configurations. The dynamics of wave propagation under different time-dependent perturbation scenarios are elucidated using the random-phase approximation dielectric function and tight-binding Hamiltonian. The modulation of coherent excitations, particularly affecting plasmon waves, provides insights into the spatial and temporal dynamics on graphene sheets. A 2D acoustic plasmon mode is observed in monolayer graphene under extrinsic doping effects, while in bilayer graphene, it is accompanied by higher frequency optical plasmons. The predicted dynamic behavior, indicative of plasmon resonance, SPEs, and Landau damping with respect to stacking and doping effects, can be detected through ultrafast coherent dynamics observed via nanoimaging and nanospectroscopy techniques.
AB - This study investigates low-frequency plasmons and single-particle excitations (SPEs) in monolayer and bilayer graphene with various stacking configurations. The dynamics of wave propagation under different time-dependent perturbation scenarios are elucidated using the random-phase approximation dielectric function and tight-binding Hamiltonian. The modulation of coherent excitations, particularly affecting plasmon waves, provides insights into the spatial and temporal dynamics on graphene sheets. A 2D acoustic plasmon mode is observed in monolayer graphene under extrinsic doping effects, while in bilayer graphene, it is accompanied by higher frequency optical plasmons. The predicted dynamic behavior, indicative of plasmon resonance, SPEs, and Landau damping with respect to stacking and doping effects, can be detected through ultrafast coherent dynamics observed via nanoimaging and nanospectroscopy techniques.
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U2 - 10.1002/pssb.202400222
DO - 10.1002/pssb.202400222
M3 - Article
AN - SCOPUS:85196650014
SN - 0370-1972
VL - 261
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 10
M1 - 2400222
ER -