Interaction between Mn ions and free carriers in quantum wells with asymmetrical semimagnetic barriersD. M. Zayachuk, T. Slobodskyy, G. V. Astakhov, C. Gould, G. Schmidt, W. Ossau and L. W. MolenkampEPL, 91 6 (2010) 67007DOI: https://doi.org/10.1209/0295-5075/91/67007