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Article Dans Une Revue Physical Review B Année : 2020

Temperature dependence of the longitudinal spin relaxation time T1 of single nitrogen-vacancy centers in nanodiamonds

Résumé

We report the experimental study of the temperature dependence of the longitudinal spin relaxation time T1 of single nitrogen-vacancy (NV) centers hosted in nanodiamonds. To determine the relaxation mechanisms at stake, measurements of the T1 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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Dates et versions

hal-03001778 , version 1 (09-06-2021)

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Timothée de Guillebon, Baptiste Vindolet, Jean-François Roch, Vincent Jacques, Loïc Rondin. Temperature dependence of the longitudinal spin relaxation time T1 of single nitrogen-vacancy centers in nanodiamonds. Physical Review B, 2020, 102, pp.165427. ⟨10.1103/PhysRevB.102.165427⟩. ⟨hal-03001778⟩
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