Spin Effects in Transport through Quantum Dots

During the last years we have been interested in the spin structures of many-electron quantum dots, especially in high magnetic fields. In using the phenomena of spin blockade and Kondo effect we had been able to detect different spin structures in dependence of the number of electrons occupying the quantum dot [1]. Exchange and correlation effects were identified as being responsible for the observed changes in the spin structures of these quantum dots [2]. Very recently we used this knowledge to study spin-coupling effects between two quantum dots separated by an electronic island and we observed an influence of the chiral nature of the edge states connecting the two dots in high magnetic fields [3]. [1] M. Rogge et al. Phys. Rev. Lett. 97, 176901 (2006) [2] M. Rogge et al. Phys. Rev. Lett. 105, 046802 (2010) [3] D. Tutuc et al. arxiv 1010.5692

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