We report the observation of an unusually large number of consecutive spin pairs in a weakly coupled many-electron GaAs/AlGaAs quantum dot. The pairs are identified due to pairwise parallel shifts of Coulomb resonances in a perpendicular magnetic field. Using a nearby quantum point contact for time-resolved charge detection, the tunneling rates are investigated as a function of gate voltage and magnetic field. We compare our experimental data to a single-level transport model and discuss possible reasons for deviations.
@article{arxiv.1509.08096,
title = {Spin pairs in a weakly coupled many-electron quantum dot},
author = {S. Hellmüller and D. Bischoff and T. Müller and M. Beck and K. Ensslin and T. Ihn},
journal= {arXiv preprint arXiv:1509.08096},
year = {2015}
}