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

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

2007-04-16

arxiv.org/abs/0704.1979v1

AIP Conference Proceedings 918, 312 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures, presented on "XI Training Course in the Physics of Strongly Correlated Systems", Vietri sul Mare, Salerno,

Scientific paper

10.1063/1.2752001

We investigate serial double quantum dot systems with on-site and inter-site interaction by means of Sch\"onhammer-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.

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