Field-controlled spin and charge distributions in Kondo system with a triangular triple quantum dot

Mikito Koga, Masashige Matsumoto, Hiroaki Kusunose

研究成果: Article査読

5 被引用数 (Scopus)

抄録

The Kondo effect plays an important role in the emergence of electric polarization in a triangular triple-quantum-dot system, where one of the three dots is connected to a metallic lead through a point contact. The interplay between spin and charge distributions is investigated on the basis of an impurity Anderson model where the impurity-site cluster is described by a three-site Hubbard model. The numerical renormalization group analysis demonstrates that an applied magnetic field suppresses the Kondo effect and that the three-site spin correlations lead to an abrupt change in the local electric and magnetic polarizations. The controllability of this multiferroic behavior on the nanoscale is also discussed.

本文言語English
論文番号093706
ジャーナルJournal of the Physical Society of Japan
82
9
DOI
出版ステータスPublished - 1 9 2013

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