Crossover from quantum to Boltzmann transport in graphene

被引：76

作者：

Adam, Shaffique ^{[1
]}

Brouwer, Piet W. ^{[2
]}

Das Sarma, S. ^{[1
]}

机构：

[1] Univ Maryland, Condensed Matter Theory Ctr, Dept Phys, College Pk, MD 20742 USA

[2] Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 20期

关键词：

electrical conductivity; graphene; GAS;

D O I：

10.1103/PhysRevB.79.201404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We compare a fully quantum-mechanical numerical calculation of the conductivity of graphene to the semiclassical Boltzmann theory. Considering a disorder potential that is smooth on the scale of the lattice spacing, we find quantitative agreement between the two approaches away from the Dirac point. At the Dirac point the two theories are incompatible at weak disorder, although they may be compatible for strong disorder. Our numerical calculations provide a quantitative description of the full crossover between the quantum and semiclassical graphene transport regimes.

引用

页数：4

共 33 条

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