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Friedel Oscillations in graphene: Sublattice Asymmetry in Doping

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Figure

FIG. 1. (Color online) Schematic of a graphene lattice with
TABLE I. Perturbation operators ( ˆfollows the rule thatV ) and the corresponding fluctuation in the system GF at a general lattice site i (�Gii)
FIG. 2. (Color online) The FO introduced by a substitutional impurity of strength λwhensection ofplot of the black sublattice data with a regression line (red, dashed) corresponding to a decay ofof numerical (black circles) and SPA (green line) calculation
FIG. 3. (Color online) (a) Numerical simulation of �nandthe black sublattice for two weak scatterersFermi energy lies in the linear dispersion regime, the interferencepattern that arises is similar to that seen in classical waves
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