Electron pumping through quantum dots defined in parallel etched quantum wires

被引：4

作者：

Blumenthal, M. D. ^{[1
,2
]}

Kaestner, B. ^{[2
,3
]}

Li, L. ^{[2
,4
]}

Giblin, S. ^{[2
]}

Janssen, T. J. B. M. ^{[2
]}

Pepper, M. ^{[1
]}

Anderson, D. ^{[1
]}

Jones, G. ^{[1
]}

Ritchie, D. A. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Natl Phys Lab, Teddington TW11 0LW, Middx, England

[3] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany

[4] Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China

来源：

MICROELECTRONICS JOURNAL | 2008年 / 39卷 / 3-4期

关键词：

electron transport; electron pump; single-electron transport; quantum wires; quantum dot; electrical current standard;

D O I：

10.1016/j.mejo.2008.01.004

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present the first results on electron transport through a tuneable-barrier double quantum dot electron pump. This device could yield twice the current to a single-dot pump previously reported [M.D. Blumenthal, B. Kaestner, L. Li, S. Giblin,, T.J.B.M. Janssen, M. Pepper, D. Anderson, G. Jones, D.A. Ritchie, Gigahertz quantized charge pumping, Nat. Phys. 3 (2007) 343], at the same operating frequency. The two quantum wires forming the device were not sufficiently homogeneous for pumping to be observed through both dots simultaneously, but sufficient homogeneity should be attainable in future batches of devices. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：365 / 368

页数：4

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