Hole- Cr+ nanomagnet in a semiconductor quantum dot

 nanomagnet in a semiconductor quantum dot},
  author={Vikas Tiwari and Masashi Arino and S. P. Gupta and Makiko Morita and T. Inoue and Damien Caliste and Pascal Pochet and Herv{\'e} Boukari and Shinji Kuroda and L. Besombes},
  journal={Physical Review B},
We study a new diluted magnetic semiconductor system based on the spin of the ionized acceptor Cr + . We show that the negatively charged Cr + ion, an excited state of the Cr in II-VI semiconductor, can be stable when inserted in a CdTe quantum dot (QD). The Cr + attracts a heavy-hole in the QD and form a stable hole-Cr + complex. Optical probing of this system reveals a ferromagnetic coupling between heavy-holes and Cr + spins. At low temperature, the thermalization on the ground state of the… 



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