Ref HAL: hal-03001778_v1
Ref Arxiv: 2005.12083
DOI: 10.1103/PhysRevB.102.165427
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
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.