Spatially resolved manipulation of single electrons in quantum dots using a scanned probe

被引：95

作者：

Pioda, A ^{[1
]}

Kicin, S

Ihn, T

Sigrist, M

Fuhrer, A

Ensslin, K

Weichselbaum, A

Ulloa, SE

Reinwald, M

Wegscheider, W

机构：

[1] ETH, CH-8093 Zurich, Switzerland

[2] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

[3] Univ Regensburg, Inst Expt & Angew Phys, D-8400 Regensburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.93.216801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The scanning metallic tip of a scanning force microscope was coupled capacitively to electrons confined in a lithographically defined gate-tunable quantum dot at a temperature of 300 mK. Single electrons were made to hop on or off the dot by moving the tip or by changing the tip bias voltage owing to the Coulomb-blockade effect. Spatial images of conductance resonances map the interaction potential between the tip and individual electronic quantum dot states. Under certain conditions this interaction is found to contain a tip-voltage induced and a tip-voltage-independent contribution.

引用

页数：4

共 24 条

[1] Imaging fractal conductance fluctuations and scarred wave functions in a quantum billiard [J].