Density of States in Graphene with Vacancies: Midgap Power Law and Frozen Multifractality

URN to cite this document:: urn:nbn:de:bvb:355-epub-459646
DOI to cite this document:: 10.5283/epub.45964

Häfner, V. ; Schindler, J. ; Weik, N. ; Mayer, T. ; Balakrishnan, S. ; Narayanan, R. ; Bera, S. ; Evers, Ferdinand

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Date of publication of this fulltext: 11 Jun 2021 06:58

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Abstract

The density of states ϱ(E) of graphene is investigated numerically and within the self-consistent T-matrix approximation in the presence of vacancies within the tight binding model. The focus is on compensated disorder, where the concentration of vacancies nA and nB in both sublattices is the same. Formally, this model belongs to the chiral symmetry class BDI. The nonlinear sigma model predicts ...