The many-body correction to the band structure of a quasi-free-standing graphene layer is obtained 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 = 0), which is on the order of 50-150 meV, depending on the electron concentration n(e), and is in semiquantitative agreement with experimental data. The value of the Fermi velocity is renormalized by several percents and decreases with increasing electron concentration as found experimentally.
TY - JOUR
AU - Krstajić, Predrag
AU - Peeters, F. M.
PY - 2012
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/957
AB - The many-body correction to the band structure of a quasi-free-standing graphene layer is obtained 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 = 0), which is on the order of 50-150 meV, depending on the electron concentration n(e), and is in semiquantitative agreement with experimental data. The value of the Fermi velocity is renormalized by several percents and decreases with increasing electron concentration as found experimentally.
PB - Amer Physical Soc, College Pk
T2 - Physical Review B
T1 - Energy-momentum dispersion relation of plasmarons in graphene
VL - 85
IS - 20
DO - 10.1103/PhysRevB.85.205454
ER -
@article{
author = "Krstajić, Predrag and Peeters, F. M.",
year = "2012",
abstract = "The many-body correction to the band structure of a quasi-free-standing graphene layer is obtained 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 = 0), which is on the order of 50-150 meV, depending on the electron concentration n(e), and is in semiquantitative agreement with experimental data. The value of the Fermi velocity is renormalized by several percents and decreases with increasing electron concentration as found experimentally.",
publisher = "Amer Physical Soc, College Pk",
journal = "Physical Review B",
title = "Energy-momentum dispersion relation of plasmarons in graphene",
volume = "85",
number = "20",
doi = "10.1103/PhysRevB.85.205454"
}
Krstajić, P.,& Peeters, F. M.. (2012). Energy-momentum dispersion relation of plasmarons in graphene. in Physical Review B
Amer Physical Soc, College Pk., 85(20).
https://doi.org/10.1103/PhysRevB.85.205454
Krstajić P, Peeters FM. Energy-momentum dispersion relation of plasmarons in graphene. in Physical Review B. 2012;85(20).
doi:10.1103/PhysRevB.85.205454 .
Krstajić, Predrag, Peeters, F. M., "Energy-momentum dispersion relation of plasmarons in graphene" in Physical Review B, 85, no. 20 (2012),
https://doi.org/10.1103/PhysRevB.85.205454 . .
