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Energy-momentum dispersion relation of plasmarons in bilayer graphene

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2013
Authors
Krstajić, Predrag
Peeters, F. M.
Article (Published version)
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Abstract
The relation between the energy and momentum of plasmarons in bilayer graphene is investigated within the Overhauser approach, where the electron-plasmon interaction is described as a field theoretical problem. We find that the Dirac-like spectrum is shifted by Delta E(k) similar to 100 divided by 150 meV depending on the electron concentration n(e) and electron momentum. The shift increases with electron concentration as the energy of plasmons becomes larger. The dispersion of plasmarons is more pronounced than in the case of single layer graphene, which is explained by the fact that the energy dispersion of electrons is quadratic and not linear. We expect that these predictions can be verified using angle-resolved photoemission spectroscopy (ARPES).
Source:
Physical Review B, 2013, 88, 16
Publisher:
  • Amer Physical Soc, College Pk
Projects:
  • Flemish Science Foundation (FWO-Vl)
  • ESF-EuroGRAPHENE project CON-GRAN
  • Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)

DOI: 10.1103/PhysRevB.88.165420

ISSN: 2469-9950

WoS: 000326089400004

Scopus: 2-s2.0-84887074258
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/1249
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