It is demonstrated that parallel weakly coupled quantum dots exhibit non-equilibrium blockade regimes caused by a full occupation in the spin triplet state, in analogy to the Pauli spin blockade in serially weakly coupled quantum dots. Charge tends to accumulate in the two-electron triplet for bias voltages that support transitions between the singlet and three-electron states.
@article{arxiv.cond-mat/0511165,
title = {Non-equilibrium triplet blockade in parallel coupled quantum dots},
author = {J. Fransson},
journal= {arXiv preprint arXiv:cond-mat/0511165},
year = {2007}
}
Comments
4 pages, 3 figures; Correction of the model and the discussion for the physics of the Pauli spin blockade. The non-equilibrium blockade regime remains within the corrected model, while the discussion have been slightly modified. Last version, as published