Local density of states and Friedel oscillation in graphene

Abstract

We investigate the local density of states and Friedel oscillation in graphene around a well localized impurity in Born approximation. In our analytical calculations Green's function technique has been used taking into account both the localized atomic wavefunctions in a tight-binding scheme and the corresponding symmetries of the lattice. As a result we obtained long wavelength oscillations in the density of electrons with long range behavior proportional to the inverse square of the distance from the impurity. These leading oscillations are out of phase on nearby lattice sites (in fact for an extended defect they cancel each other within one unit cell), therefore a probe with resolution worse than a few unit cells will experience only the next to leading inverse cube decay of density oscillations even for a short range scatterer.

4 pages, 1 figure

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Cited by in corpus (13)

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• Variational study of the Kitaev-Heisenberg-Gamma model
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• Effect of hydrogen adsorption on the quasiparticle spectra of graphene
• Transport anomaly at the ordering transition for adatoms on graphene
• Resonant finite-size impurities in graphene, unitary limit and Friedel oscillations
• Green Functions of Graphene: An Analytic Approach
• Robust wavefront dislocations of Friedel oscillations in gapped graphene
• Enhancement of spin-orbit coupling and magnetic scattering in hydrogenated graphene
• Probing barrier transmission in ballistic graphene
• Effect of Inter-Adatoms Correlations on the Local Density of States of Graphene
• Magnetic correlation effects by the topological zero mode in a hydrogenated graphene vacancy $V_{111}$