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Ruderman-Kittel-Kasuya-Yosida and magnetic-field interactions in coupled Kondo quantum dots.

Authors
Type
Published Article
Journal
Physical review letters
Publication Date
Volume
94
Issue
8
Pages
86602–86602
Identifiers
PMID: 15783913
Source
Medline
License
Unknown

Abstract

We investigate theoretically the transport properties of two independent artificial Kondo impurities. They are coupled together via a tunable Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. For strong enough antiferromagnetic RKKY interaction, the impurity density of states increases with the applied in-plane magnetic-field. This effect can be used to distinguish between antiferromagnetic and ferromagnetic RKKY interactions. These results may be relevant to explain some features of recent experiments by Craig et al. [Science 304, 565 (2004)].

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