Data di Pubblicazione:
2013
Citazione:
Universality, exponents and anomaly cancellation in disordered Dirac fermions / V. Mastropietro. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 875:2(2013 Oct), pp. 408-422. [10.1016/j.nuclphysb.2013.07.007]
Abstract:
Disordered 2D chiral fermions provide an effective description of several materials including graphene and topological insulators. While previous analysis considered delta correlated disorder and no ultraviolet cut-offs, we consider here the effect of short range correlated disorder and the presence of a momentum cut-off, providing a more realistic description of condensed matter models. We show that the density of states is anomalous with a critical exponent function of the disorder and that conductivity is universal only when the ultraviolet cut-off is removed, as consequence of the supersymmetric cancellation of the anomalies.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
V. Mastropietro
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