Hysteretic behavior in weakly coupled double-dot transport in the spin blockade regime
arXiv:0712.4080 · doi:10.1063/1.2828029
Abstract
Double quantum dot systems in the spin blockade regime exhibit leakage currents that have been attributed to the Hyperfine interaction. We model weakly coupled double-dot transport using a rate equation approach which accounts for Hyperfine flip-flop transitions. The rate equations allow us to obtain self-consistently the time evolution for electronic charge occupations and for the nuclei polarizations in each dot. We analyze the current in the spin blockade region as a function of magnetic field and observe hysteretic behavior for fields corresponding to the crossing between triplet and singlet states.
3 pages and 4 figures. Accepted in APL
References in corpus (8)
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- Semiclassical spin-spin dynamics and feedback control in transport through a quantum dot
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- Resonance peak shift in the photo-current of ultrahigh-mobility two-dimensional electron systems
- Multiple photoexcitation of two-dimensional electron systems: bichromatic magnetoresistance oscillations revisited
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