Kondo effect from a tunable bound state within a quantum wire

被引：58

作者：

Sfigakis, F. ^{[1
]}

Ford, C. J. B. ^{[1
]}

Pepper, M. ^{[1
]}

Kataoka, M. ^{[1
]}

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

Simmons, M. Y. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.100.026807

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the conductance of quantum wires with a variable open quantum dot geometry, displaying an exceptionally strong Kondo effect and most of the 0.7 structure characteristics. Our results indicate that the 0.7 structure is not a manifestation of the singlet Kondo effect. However, specific similarities between our devices and many of the clean quantum wires reported in the literature suggest a weakly bound state is often present in real quantum wires.

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页数：4

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