Coulomb correlations evidenced in the magneto-optical spectra of charged excitons in semiconductor quantum dots
Oberli, D. Y. · Byszewski, M. · Chalupar, B. · Pelucchi, E. · Rudra, A. · Kapon, E.
Original · EN
The emission spectral pattern of a charged exciton in a semiconductor quantum dot is composed of a quadruplet of linearly polarized lines in the presence of a magnetic field oriented perpendicularly to the direction of the photon momentum. By measuring the Zeeman splittings, we obtain the effective g factors of the carriers and find that the hole g factor is very sensitive to the QD shape asymmetry. By comparing the effective g factors obtained for the neutral and the charged excitons in the same quantum dot, we uncover the role of Coulomb correlations in these excitonic states.
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