Lateral quantum dot molecule with controlled electron number and spin polarized leads

摘要

We describe the results of Coulomb and spin blockade measurements of a lateral double quantum dot device with spin polarized leads in the regime of a low number of electrons. We analyze magnetic field dependence of the spectra measured in different regions of the charging diagram with a strong emphasis on the amplitude modulation. We relate the behavior of the molecular-like states of the coupled systems to that of the related single dot spectra. The regime around filling factor v = 2 in each of the artificial atoms is discussed in details.