The tight-binding model is closely associated with the modified random-phase approximation to thoroughly explore the electron-electron interactions in trilayer AB-stacked graphene. The intralayer and interlayer atomic/Coulomb interactions dominate the collective and electron-hole excitations. The unusual energy bands are directly reflected in the diverse transferred momentum-frequency phase diagrams. There exist three kinds of plasmon modes during the variation of the doping level, being accompanied with the complicated intraband and interband single-particle excitations. The excitation behaviors are greatly diversified by the number of layers. The theoretical predictions require the high-resolution experimental examinations.
@article{arxiv.1803.10715,
title = {Unusual Electronic excitations in ABA trilayer graphene},
author = {Chiun-Yan Lin and Ming-Chieh Lin and Jhao-Ying Wu and Ming-Fa Lin},
journal= {arXiv preprint arXiv:1803.10715},
year = {2018}
}