Spin properties of very shallow nitrogen vacancy defects in diamond

By B. Ofori-Okai, S. Pezzagna, K. Chang, M. Loretz, R. Schirhagl, Ye Tao, B. Moores, K. Groot-Berning, J. Meijer, C. Degen. 2012

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We investigate spin and optical properties of individual nitrogen-vacancy centers located within 1-10 nm from the diamond surface. We observe stable defects with a characteristic optically detected magnetic resonance spectrum down to lowest depth. We also find a small, but systematic spectral broadening for defects shallower than about 2 nm. This broadening is consistent with the presence of a surface paramagnetic impurity layer [Tisler et al., ACS Nano 3, 1959 (2009)] largely decoupled by motional averaging. The observation of stable and well-behaved defects very close to the surface is critical for single-spin sensors and devices requiring nanometer proximity to the target.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/526a9ba971b0e129847779b534cb166ed8319c48

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In Materials Chemistry

1. C. Degen
2. M. Loretz

Citations in the corpus

• Nitrogen-vacancy centers in diamond: nanoscale sensors for physics and biology. (2014, background): “This directly compromises detection sensitivity (26).”