Detection of local-moment formation using the resonant interaction between coupled quantum wires

被引：31

作者：

Puller, VI ^{[1
]}

Mourokh, LG

Shailos, A

Bird, JP

机构：

[1] Stevens Inst Technol, Dept Phys & Engn Phys, Hoboken, NJ 07030 USA

[2] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA

[3] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.92.096802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the influence of many-body interactions on the transport characteristics of a pair of quantum wires that are coupled to each other by means of a quantum dot. Under conditions where a local magnetic moment is formed in one of the wires, tunnel coupling to the other gives rise to an associated peak in its density of states, which can be detected directly in a conductance measurement. Our theory is therefore able to account for the key observations in the recent study of T. Morimoto et al. [Appl. Phys. Lett. 82, 3952 (2003)], and demonstrates that coupled quantum wires may be used as a system for the detection of local magnetic-moment formation.

引用

页码：096802 / 1

页数：4

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