Journal
PHYSICAL REVIEW B
Volume 82, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.205428
Keywords
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Funding
- National Natural Science Foundation of China [10804053]
- Flemish Science Foundation (FWO-Vl)
- Belgian Science Policy (IAP)
- Chinese Academy of Sciences and Department of Science and Technology of Yunnan Province
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The density of states (DOS) and the optical conductivity of graphene is calculated in the presence of a perpendicular magnetic field and where scattering on charged and short-range impurities is included. The standard Kubo formula is employed where the self-energy induced by impurity scattering and the Green's function are calculated self-consistently including inter-Landau level (LL) coupling and screening effects. It is found that the scattering from those two types of impurities results in a symmetric LL broadening and asymmetric inter-LL coupling renormalizes the LL positions to lower energy. The peak position and intensity of the magneto-optical conductivity depends on the filling factor and the broadened DOS. Good agreement is found with recent cyclotron resonance measurements.
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