Probing a Kondo correlated quantum dot with spin spectroscopy

Details Probing a Kondo correlated quantum dot with spin spectroscopy Probing a Kondo correlated quantum dot with spin spectroscopy

2005-09-14

arxiv.org/abs/cond-mat/0509377v1

Phys. Rev. Lett. 96, 046802 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.96.046802

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.

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