Optically detected cross-relaxation spectroscopy of electron spins in diamond

Hai-Jing Wang, Chang S. Shin, Scott J. Seltzer, Claudia E. Avalos, Alexander Pines and Vikram S. Bajaj ()
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Hai-Jing Wang: Lawrence Berkeley National Laboratory
Chang S. Shin: Lawrence Berkeley National Laboratory
Scott J. Seltzer: Lawrence Berkeley National Laboratory
Claudia E. Avalos: Lawrence Berkeley National Laboratory
Alexander Pines: Lawrence Berkeley National Laboratory
Vikram S. Bajaj: Lawrence Berkeley National Laboratory

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract The application of magnetic resonance spectroscopy at progressively smaller length scales may eventually permit ‘chemical imaging’ of spins at the surfaces of materials and biological complexes. In particular, the negatively charged nitrogen-vacancy (NV−) centre in diamond has been exploited as an optical transducer for nanoscale nuclear magnetic resonance. However, the spectra of detected spins are generally broadened by their interaction with proximate paramagnetic NV− centres through coherent and incoherent mechanisms. Here we demonstrate a detection technique that can resolve the spectra of electron spins coupled to NV− centres, in this case, substitutional nitrogen and neutral nitrogen-vacancy centres in diamond, through optically detected cross-relaxation. The hyperfine spectra of these spins are a unique chemical identifier, suggesting the possibility, in combination with recent results in diamonds harbouring shallow NV− implants, that the spectra of spins external to the diamond can be similarly detected.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5135

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DOI: 10.1038/ncomms5135

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