Transconductance of a double quantum dot system in the kondo regime

被引：8
|
作者：
Koerting, V. [1 ]
Woelfle, P.
Paaske, J.
机构：
[1] Univ Karlsruhe, Inst Theorie Kondensierten Mat, Kaiserstr 12, D-76128 Karlsruhe, Germany
[2] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark
[3] Univ Copenhagen, Nanosci Ctr, DK-2100 Copenhagen, Denmark
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 03期
关键词：
D O I：
10.1103/PhysRevLett.99.036807
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We consider a lateral double-dot system in the Coulomb blockade regime with a single spin-1/2 on each dot, mutually coupled by an antiferromagnetic exchange interaction. Each of the two dots is contacted by two leads. We demonstrate that the voltage across one of the dots will have a profound influence on the current passing through the other dot. Using poor man's scaling, we find that the Kondo effect can lead to a strong enhancement of this transconductance.
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页数：4
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