Coulomb drag of massless fermions in graphene

被引：166

作者：

Kim, Seyoung ^{[1
]}

Jo, Insun ^{[2
]}

Nah, Junghyo ^{[1
]}

Yao, Z. ^{[2
]}

Banerjee, S. K. ^{[1
]}

Tutuc, E. ^{[1
]}

机构：

[1] Univ Texas Austin, Microelect Res Ctr, Austin, TX 78758 USA

[2] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 16期

关键词：

2-DIMENSIONAL ELECTRON; FLUCTUATIONS; TRANSPORT; LAYERS; GAS;

D O I：

10.1103/PhysRevB.83.161401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using a structure consisting of two, independently contacted graphene single layers separated by an ultrathin dielectric, we experimentally measure the Coulomb drag of massless fermions in graphene. At temperatures higher than 50 K, the Coulomb drag follows a temperature and carrier density dependence consistent with the Fermi liquid regime. As the temperature is reduced, the Coulomb drag exhibits giant fluctuations with an increasing amplitude, thanks to the interplay between coherent transport in the graphene layer and interaction between the two layers.

引用

页数：4

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