We present a direct observation of a coherent spin precession of an individual Mn2+ ion, having both electronic and nuclear spins equal to 5/2, embedded in a CdTe quantum dot and placed in magnetic field. The spin state evolution is probed in a time-resolved pump-probe measurement of absorption of the single dot. The experiment reveals subtle details of the large-spin coherent dynamics, such as non-sinusoidal evolution of states occupation, and beatings caused by the strain-induced differences in energy levels separation. Sensitivity of the large-spin impurity on the crystal strain opens the possibility of using it as a local strain probe.
@article{arxiv.1408.2263,
title = {Coherent precession of an individual 5/2 spin},
author = {M. Goryca and M. Koperski and P. Wojnar and T. Smoleński and T. Kazimierczuk and A. Golnik and P. Kossacki},
journal= {arXiv preprint arXiv:1408.2263},
year = {2014}
}