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Transport in finite graphene samples
- Source :
- Phys. Rev. B 81, 241404(R) (2010)
- Publication Year :
- 2010
-
Abstract
- We study the DC transport of finite graphene samples with random gap. Using Dirac fermions to describe the low-energy physics near the Dirac point, we employ a generalized Drude form for the conductivity. The latter is constant for a vanishing average gap but always decreases with increasing sample size for a nonzero average gap. The asymptotic conductivity of the infinite sample is either nonzero if the average gap is smaller than a critical value or zero otherwise. Our results are in agreement with recent numerical calculations of Bardarson et al..<br />Comment: 4 pages, improved figures, 2 figures added
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 81, 241404(R) (2010)
- Publication Type :
- Report
- Accession number :
- edsarx.1002.3734
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.81.241404