Coulomb correlations evidenced in the magneto-optical spectra of charged   excitons in semiconductor quantum dots
  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. 
D. Y. Oberli, M. Byszewski, B. Chalupar, E. Pelucchi, A. Rudra and E.   Kapon