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arXiv · 2005.12083

Temperature-dependence of T1 spin relaxation of single NV centers in nanodiamonds

Timothée de Guillebon·Baptiste Vindolet·Jean-François Roch·Vincent Jacques·Loïc Rondin
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Abstract

We report the experimental study of the temperature-dependence of the longitudinal spin relaxation time $T_1$ of single Nitrogen-Vacancy (NV) centers hosted in nanodiamonds. To determine the relaxation mechanisms at stake, measurements of the $T_1$ relaxation time are performed for a set of individual NV centers both at room and cryogenic temperatures. The results are consistant with a temperature-dependent relaxation process which is attributed to a thermally-activated magnetic noise produced by paramagnetic impurities lying on the nanodiamond surface. These results confirm the existence of surface-induced spin relaxation processes occurring in nanodiamonds, which are relevant for future developments of sensitive nanoscale NV-based quantum sensors.

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Timothée de Guillebon, Baptiste Vindolet, Jean-François Roch, Vincent Jacques, Loïc Rondin. 2020-10-12. Temperature-dependence of T1 spin relaxation of single NV centers in nanodiamonds. https://doi.org/10.1103/physrevb.102.165427

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