@article{MargapotiAlvesMahapatraetal.2012,
  author    = {Margapoti, E. and Alves, F. M. and Mahapatra, S. and Lopez-Richard, V. and Worschech, L. and Brunner, K. and Qu, F. and Destefani, C. and Menendez-Proupin, E. and Bougerol, C. and Forchel, A. and Marques, G. E.},
  title     = {Paramagnetic shift in thermally annealed Cd\(_x\)Zn\(_{1-x}\)Se quantum dots},
  series = {New Journal of Physics},
  volume    = {14},
  journal   = {New Journal of Physics},
  number    = {043038},
  doi       = {10.1088/1367-2630/14/4/043038},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-133294},
  year      = {2012},
  abstract  = {The photoluminescence of annealed Cd\(_x\)Zn\(_{1-x}\)Se quantum dots (QDs) under the influence of an external magnetic field has been studied in this paper. Post-growth annealing was performed for different annealing times. Above a critical annealing time, the QD luminescence shows a pronounced red-shift of the Zeeman split magnetic subcomponents. This observation is in contrast to the blue-shift caused by the diamagnetic behavior that is usually observed in non-magnetic QDs. We attribute our finding to the paramagnetism caused by the mixing of heavy and light hole states. Hence, post-growth thermal annealing treatment might be employed to render undoped epitaxial QDs intrinsically magnetic in a controlled manner. Two theoretical models were developed: a few-particle model to account for excitonic complex effects and a multiband calculation that describes the valence band hybridization. Contrasting the two models allowed us to unambiguously elucidate the nature of such an effect.},
  language  = {en}
}