SU(2) and SU(4) Kondo effect in double quantum dots

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We investigate serial double quantum dot systems with on-site and inter-site interaction by means of Schönhammer-Gunnarsson projection-operator method. The ground state is established by the competition between extended Kondo phases and localized singlet phases in spi$ degrees of freedom. We present and discuss different phases, as discerned by characteristic correlation functions. We discuss also how different phases would be seen in linear transport measurements.
5 pages, 2 figures, presented on "XI Training Course in the Physics of Strongly Correlated Systems", Vietri sul Mare, Salerno, Italy

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Mesoscale and Nanoscale Physics, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/144526

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.1979
 http://arxiv.org/abs/0704.1979
 AIP Conference Proceedings 918, 312 (2006)
 doi:10.1063/1.2752001

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arXiv