| Issue |
EPL
Volume 82, Number 5, June 2008
|
|
|---|---|---|
| Article Number | 57008 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/82/57008 | |
| Published online | 27 May 2008 | |
Dirac fermions in a power-law
correlated random vector potential
Department of Physics and Astronomy, University of North Carolina - Chapel Hill, NC 27599, USA
Received:
26
January
2008
Accepted:
21
April
2008
We study localization properties of two-dimensional Dirac fermions subject to a power-lawcorrelated random vector potential describing, e.g., the effect of “ripples” in a free standing graphene. By using a variety of techniques (low-order perturbation theory, self-consistent Born approximation, replicas, and supersymmetry) we compute the low-energy density of states and discuss a possible (pre)localization of the entire single-particle spectrum.
PACS: 71.10 Pm – Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.) / 72.15 Rn – Localization effects (Anderson or weak localization) / 73.20 Jc – Delocalization processes
© EPLA, 2008
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