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- W2034886854 abstract "The question of why different experiments obtain different shapes of Landau subbands of two-dimensional electron gases (2DEG's) is investigated. In particular, we consider disordered graphene within the tight-binding formulation in a high magnetic field and in the presence of impurity potentials of a finite interaction range. It is found that the shape of the total density of states (DOS) of Landau subbands is well described by a Gaussian function, while the shape of the local density of states (LDOS) can be fitted to either a simple Lorentzian function or a sum of several Lorentzian functions. This finding explains well why the experiments that measure the DOS of a Landau subband appear to be Gaussian, and those experiments that are sensitive to the LDOS can only be fitted well by Lorentzian functions. Thus, our results provide a natural explanation to this long-standing puzzle involving 2DEG's in the quantum Hall regime." @default.
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- W2034886854 date "2011-04-18" @default.
- W2034886854 modified "2023-10-16" @default.
- W2034886854 title "Shape of the Landau subbands in disordered graphene" @default.
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- W2034886854 doi "https://doi.org/10.1103/physrevb.83.153408" @default.
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