Coupled charge and spin dynamics in high-density ensembles of nitrogen-vacancy centers in diamond
Coupled charge and spin dynamics in high-density ensembles of nitrogen-vacancy centers in diamond
We studied the spin depolarization of ensembles of nitrogen-vacancy (NV) centers in nitrogen-rich single crystal diamonds. We found a strong dependence of the evolution of the polarized state in the dark on the concentration of NV centers. At low excitation power, we observed a simple exponential decay profile in the …