Spin state mixing in InAs double quantum dots

Details Spin state mixing in InAs double quantum dots Spin state mixing in InAs double quantum dots

2007-04-07

arxiv.org/abs/0704.0980v1

Phys. Rev. B 76, 161308(R) (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.76.161308

We quantify the contributions of hyperfine and spin-orbit mediated singlet-triplet mixing in weakly coupled InAs quantum dots by electron transport spectroscopy in the Pauli spin blockade regime. In contrast to double dots in GaAs, the spin-orbit coupling is found to be more than two orders of magnitudes larger than the hyperfine mixing energy. It is already effective at magnetic fields of a few mT, where deviations from hyperfine mixing are observed.

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