Temperature- and magnetic-field-dependent longitudinal spin relaxation in nitrogen-vacancy ensembles in diamond.

@article{Jarmola2012TemperatureAM,
  title={Temperature- and magnetic-field-dependent longitudinal spin relaxation in nitrogen-vacancy ensembles in diamond.},
  author={Andrey Jarmola and V M Acosta and Kasper Jensen and Sergey Chemerisov and Dmitry Budker},
  journal={Physical review letters},
  year={2012},
  volume={108 19},
  pages={197601}
}
We present an experimental study of the longitudinal electron-spin relaxation time (T1) of negatively charged nitrogen-vacancy (NV) ensembles in diamond. T1 was studied as a function of temperature from 5 to 475 K and magnetic field from 0 to 630 G for several samples with various NV and nitrogen concentrations. Our studies reveal three processes responsible for T1 relaxation. Above room temperature, a two-phonon Raman process dominates; below room temperature, we observe an Orbach-type process… CONTINUE READING
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