Probing a Kondo correlated quantum dot with spin spectroscopy

Phys. Rev. Lett. 96, 046802 (2006) We investigate Kondo effect and spin blockade observed on a many-electron quantum dot and study the magnetic field dependence. At lower fields a pronounced Kondo effect is found which is replaced by spin blockade at higher fields. In an intermediate regime both eff...

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Bibliographic Details
Main Authors Kupidura, D, Rogge, M. C, Reinwald, M, Wegscheider, W, Haug, R. J
Format Journal Article
LanguageEnglish
Published 14.09.2005
Subjects
Physics - Mesoscale and Nanoscale Physics
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Summary:Phys. Rev. Lett. 96, 046802 (2006) We investigate Kondo effect and spin blockade observed on a many-electron quantum dot and study the magnetic field dependence. At lower fields a pronounced Kondo effect is found which is replaced by spin blockade at higher fields. In an intermediate regime both effects are visible. We make use of this combined effect to gain information about the internal spin configuration of our quantum dot. We find that the data cannot be explained assuming regular filling of electronic orbitals. Instead spin polarized filling seems to be probable.
DOI:10.48550/arxiv.cond-mat/0509377