Coulomb excitations in ABC-stacked trilayer graphene

Chiun Yan Lin, Ming Hsun Lee, Ming Fa Lin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The layer-based random-phase approximation is further developed to investigate electronic excitations in trilayer ABC-stacked graphene. All layer-dependent atomic interactions and Coulomb interactions are included in the dynamic charge screening. There exist rich and unique (momentum, frequency)-excitation phase diagrams, in which the complex single-particle excitations and five kinds of plasmon modes are dominated by unusual energy bands and doping carrier densities. The latter frequently experience significant Landau damping due to the former, leading to coexistence or destruction in the energy-loss spectra. Specifically, the dispersion of the only acoustic plasmon in the pristine case is dramatically changed from linear to square root, even at very low doping.

Original languageEnglish
Article number041408
JournalPhysical Review B
Volume98
Issue number4
DOIs
Publication statusPublished - 2018 Jul 30

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Coulomb excitations in ABC-stacked trilayer graphene'. Together they form a unique fingerprint.

  • Cite this