Heine, A.W.; Tutuc, D.; Zwicknagl, G.; Schuh, D.; Wegscheider, W.; Haug, R.J.: RKKY interaction in a chirally coupled double quantum dot system. In: AIP Conference Proceedings 1566 (2013), S. 305-306. DOI:
https://doi.org/10.1063/1.4848407
Abstract: |
The competition between the Kondo effect and the Ruderman-Kittel-Kasuya- Yoshida (RKKY) interaction is investigated in a double quantum dots system, coupled via a central open conducting region. A perpendicular magnetic field induces the formation of Landau Levels which in turn give rise to the so-called Kondo chessboard pattern in the transport through the quantum dots. The two quantum dots become therefore chirally coupled via the edge channels formed in the open conducting area. In regions where both quantum dots exhibit Kondo transport the presence of the RKKY exchange interaction is probed by an analysis of the temperature dependence. The thus obtained Kondo temperature of one dot shows an abrupt increase at the onset of Kondo transport in the other, independent of the magnetic field polarity, i.e. edge state chirality in the central region. © 2013 AIP Publishing LLC.
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License of this version: |
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Publication type: |
Article |
Publishing status: |
publishedVersion |
Publication date: |
2013 |
Keywords english: |
Kondo effect, Quantum Dots, RKKY interaction, Current voltage characteristics, Kondo effect, Double quantum dots, Edge channels, Edge state, Kondo temperatures, Landau levels, Perpendicular magnetic fields, RKKY interactions, Temperature dependence, Semiconductor quantum dots
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DDC: |
530 | Physik
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Controlled keywords(GND): |
Konferenzschrift
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