Persistent currents through a quantum dot

被引：58

作者：

Simon, P ^{[1
]}

Affleck, I

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 121, Canada

[2] Univ British Columbia, Canadian Inst Adv Res, Vancouver, BC V6T 1Z1, Canada

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.64.085308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the persistent currents induced by the Aharonov-Bohm effect in a closed ring that either embeds or is directly side coupled to a quantum dot at Kondo resonance. Vie predict that in both cases, the persistent current is very sensitive to the ratio between the length of the ring and the size of the Kondo screening cloud, which appears as a fundamental prediction of scaling theories of the Kondo effect. Persistent-current measurements provide therefore an opportunity to detect this cloud, which has so far never been observed experimentally.

引用

页数：23

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