CONDUCTANCE IN VERY CLEAN QUANTUM WIRES AND RINGS

被引：76

作者：

ISMAIL, K ^{[1
]}

WASHBURN, S ^{[1
]}

LEE, KY ^{[1
]}

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 16期

关键词：

D O I：

10.1063/1.106166

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have observed clear Aharonov-Bohm oscillations in single and multiply connected rings with up to 20% modulation in conductance. The oscillations persist over a very wide range of conductance (0.1-2.0 e2/h) controlled with a gate. Conductance steps as a function of gate bias are observed for the first time in relatively long single and multiple parallel wires and rings. In 2-4-mu-m long wires, the conductance steps are in multiples of 2e2/h. In the case of the rings, steps of 0.8 and 1.2 e2/h are observed in one and two loops, respectively.

引用

页码：1998 / 2000

页数：3

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