Numerical study of the conductivity of graphene monolayer within the effective field theory approach

被引：29

作者：

Buividovich, P. V. ^{[1
,2
]}

Luschevskaya, E. V. ^{[1
]}

Pavlovsky, O. V. ^{[1
,3
]}

Polikarpov, M. I. ^{[1
]}

Ulybyshev, M. V. ^{[1
,3
]}

机构：

[1] ITEP, Moscow 117218, Russia

[2] Joint Inst Nucl Res Dubna, Dubna 141980, Moscow Region, Russia

[3] Moscow MV Lomonosov State Univ, Inst Theoret Problems Microphys, Moscow 119899, Russia

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 04期

关键词：

FERMIONS;

D O I：

10.1103/PhysRevB.86.045107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the direct numerical measurements of the conductivity of graphene monolayer. Our numerical simulations are performed in the effective lattice field theory with noncompact 3 + 1-dimensional Abelian lattice gauge fields and 2 + 1-dimensional staggered lattice fermions. The conductivity is obtained from the Green-Kubo relations using the maximum entropy method. We find that in a phase with spontaneously broken sublattice symmetry the conductivity rapidly decreases. For the largest value of the coupling constant used in our simulations g = 4.5, the dc conductivity is less than the dc conductivity in the weak-coupling phase (at g < 3.5) by at least three orders of magnitude.

引用

页数：8

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