Spin Properties of Very Shallow Nitrogen Vacancy Defects in Diamond

Details Spin Properties of Very Shallow Nitrogen Vacancy Defects in Diamond Spin Properties of Very Shallow Nitrogen Vacancy Defects in Diamond

2012-01-04

arxiv.org/abs/1201.0871v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

We report a systematic study of the spin properties of single nitrogen-vacancy defects in very close proximity to the diamond surface, down to roughly 1.1 nm. We find that even the shallowest defects are fluorescent and show a characteristic optically-detected magnetic resonance spectrum. We also find a systematic broadening of the electron spin resonance for defects shallower than about 2 nm, compatible with a layer of surface magnetic impurities undergoing motional averaging. DC and AC magnetic moment sensitivities of 0.03 muB/rtHz and 0.003 muB/rtHz, respectively, are extrapolated for sensing a target spin sitting directly on the diamond surface, where muB is the Bohr magneton.

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