We study the photoluminescence from the negatively charged (X−) trions and neutral (X) excitons, in a diluted 2DEG in a magnetic field (B) up to 55 T. At zero B we analyze the evolution of the X− and X emission intensity, tuning it through the optical depletion effect. At non-zero field we find that the emission intensity of the singlet state of the trion and of X are in inverse proposition to B, revealing the effect and the mechanism of the magnetic confinement and of the excitonic shrinkage on the emission intensity.
Trion confinement and exciton shrinkage in the 2DEG at high magnetic fields / Bellani, V.; Rossella, F.; Dionigi, F.; Goiran, M.; George, S.; Biasiol, G.; Sorba, L.. - In: SOLID STATE COMMUNICATIONS. - ISSN 0038-1098. - 3:(2012), pp. 1123-1126. [10.1016/j.ssc.2012.04.006]