Insulating behavior in metallic bilayer graphene: Interplay between density inhomogeneity and temperature

被引：38

作者：

Hwang, E. H. ^{[1
]}

Das Sarma, S. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.82.081409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate bilayer graphene transport in the presence of electron-hole puddles induced by long-range charged impurities in the environment. We explain the insulating behavior observed in the temperature-dependent conductivity of low mobility bilayer graphene using an analytic statistical theory taking into account the non-mean-field nature of transport in the highly inhomogeneous density and potential landscape. We find that the puddles can induce, even far from the charge neutrality point, a coexisting metallic and insulating transport behavior due to the random local activation gap in the system.

引用

页数：4

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