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Title: The Coulomb excitations of Bernal bilayer graphene under external fields

Abstract

We study the field effects on the Coulomb excitation spectrum of Bernal bilayer graphene by using the tight-binding model and the random-phase approximation. The electric field opens the band gap and creates the saddle points, the latter brings about a prominent interband plasmon. On the other hand, the magnetic field induces the dispersionless Landau levels (LLs) that causes the inter-LL plasmons. The two kinds of field-induced plasmon modes can be further tuned by the magnitude of momentum transfer and the field strength. The predicted results may be further validated by the inelastic light-scattering or high-resolution electron-energy-loss spectroscopy (HREELLS)

Authors:
;  [1]
  1. Department of Physics, National Cheng-Kung University, Tainan 701, Taiwan (China)
Publication Date:
OSTI Identifier:
22265925
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1590; Journal Issue: 1; Conference: International conference on electronic, photonic, plasmonic and magnetic properties of nanomaterials, London (Canada), 12-16 Aug 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; COULOMB EXCITATION; ELECTRIC FIELDS; ENERGY-LOSS SPECTROSCOPY; GRAPHENE; LIGHT SCATTERING; MAGNETIC FIELDS; MOMENTUM TRANSFER; PLASMONS; RANDOM PHASE APPROXIMATION; SPECTRA

Citation Formats

Wu, Jhao-Ying, and Lin, Ming-Fa. The Coulomb excitations of Bernal bilayer graphene under external fields. United States: N. p., 2014. Web. doi:10.1063/1.4870211.
Wu, Jhao-Ying, & Lin, Ming-Fa. The Coulomb excitations of Bernal bilayer graphene under external fields. United States. https://doi.org/10.1063/1.4870211
Wu, Jhao-Ying, and Lin, Ming-Fa. 2014. "The Coulomb excitations of Bernal bilayer graphene under external fields". United States. https://doi.org/10.1063/1.4870211.
@article{osti_22265925,
title = {The Coulomb excitations of Bernal bilayer graphene under external fields},
author = {Wu, Jhao-Ying and Lin, Ming-Fa},
abstractNote = {We study the field effects on the Coulomb excitation spectrum of Bernal bilayer graphene by using the tight-binding model and the random-phase approximation. The electric field opens the band gap and creates the saddle points, the latter brings about a prominent interband plasmon. On the other hand, the magnetic field induces the dispersionless Landau levels (LLs) that causes the inter-LL plasmons. The two kinds of field-induced plasmon modes can be further tuned by the magnitude of momentum transfer and the field strength. The predicted results may be further validated by the inelastic light-scattering or high-resolution electron-energy-loss spectroscopy (HREELLS)},
doi = {10.1063/1.4870211},
url = {https://www.osti.gov/biblio/22265925}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1590,
place = {United States},
year = {Mon Mar 31 00:00:00 EDT 2014},
month = {Mon Mar 31 00:00:00 EDT 2014}
}