Imaging localized states in graphene nanostructures

被引：74

作者：

Schnez, Stephan ^{[1
]}

Guettinger, Johannes ^{[1
]}

Huefner, Magdalena ^{[1
]}

Stampfer, Christoph ^{[1
]}

Ensslin, Klaus ^{[1
]}

Ihn, Thomas ^{[1
]}

机构：

[1] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 16期

基金：

瑞士国家科学基金会;

关键词：

SINGLE-ELECTRON TRANSISTOR; TUNABLE GRAPHENE;

D O I：

10.1103/PhysRevB.82.165445

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present scanning-gate images of a single-layer graphene quantum dot which is coupled to source and drain via two constrictions. We image and locate conductance resonances of the quantum dot in the Coulomb-blockade regime as well as resonances of localized states in the constrictions in real space, which are interpreted in light of previous transport experiments. In addition our technique allows us to estimate the extent of these localized states, namely, radii of about 10-13 nm.

引用

页数：5

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