Spin properties of very shallow nitrogen vacancy defects in diamond

Article

关键词: MAGNETIC-RESONANCE;    NANOSCALE RESOLUTION;    SINGLE SPINS;    CENTERS;    MAGNETOMETRY;    NANODIAMONDS;    RELAXATION;    MICROSCOPY;    SILICON;    CARBON;   

DOI  :  10.1103/PhysRevB.86.081406

来源: SCIE

【 摘 要 】

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 the 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.

【 授权许可】

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