Single-electron acoustic charge transport by two counterpropagating surface acoustic wave beams

被引：91

作者：

Cunningham, J ^{[1
]}

Talyanskii, VI ^{[1
]}

Shilton, JM ^{[1
]}

Pepper, M ^{[1
]}

Simmons, MY ^{[1
]}

Ritchie, DA ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.60.4850

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A powerful surface acoustic wave can transport charge along a quasi-one-dimensional channel defined in a piezoelectric semiconductor in packets confined to the minima of the wave's electrostatic potential. The interaction between electrons can suppress fluctuation in the number of electrons in a packet, resulting in a current that is proportional to the surface acoustic wave (SAW) frequency. This effect has been observed experimentally and is presently being considered as a possible route towards a standard of electric current. Here we present further study of this acoustic charge transport. The main finding is that a weak counterpropagating SAW beam can be used to improve the precision of the current delivered by the device. [S0163-1829(99)02431-5].

引用

页码：4850 / 4855

页数：6

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