Spin relaxometry of single nitrogen-vacancy defects in diamond nanocrystals for magnetic noise sensing
- 27 June 2013
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 87 (23)
- https://doi.org/10.1103/physrevb.87.235436
Abstract
We report an experimental study of the longitudinal relaxation time () of the electron spin associated with single nitrogen-vacancy (NV) defects hosted in nanodiamonds (NDs). We first show that decreases over three orders of magnitude when the ND size is reduced from 100 to 10 nm owing to the interaction of the NV electron spin with a bath of paramagnetic centers lying on the ND surface. We next tune the magnetic environment by decorating the ND surface with Gd ions and observe an efficient quenching, which demonstrates magnetic noise sensing with a single electron spin. We estimate a sensitivity down to electron spins detected within 10 s, using a single NV defect hosted in a 10-nm-size ND. These results pave the way towards -based nanoscale imaging of the spin density in biological samples. DOI: http://dx.doi.org/10.1103/PhysRevB.87.235436 ©2013 American Physical Society
Keywords
This publication has 28 references indexed in Scilit:
- Nanoscale Nuclear Magnetic Resonance with a Nitrogen-Vacancy Spin SensorScience, 2013
- Single-Spin Magnetometry with Multipulse Sensing SequencesPhysical Review Letters, 2011
- Magnetometry of random ac magnetic fields using a single nitrogen-vacancy centerApplied Physics Letters, 2010
- Sensing of Fluctuating Nanoscale Magnetic Fields Using Nitrogen-Vacancy Centers in DiamondPhysical Review Letters, 2009
- Nanoscale magnetic resonance imagingProceedings of the National Academy of Sciences of the United States of America, 2009
- Nanoscale magnetic sensing with an individual electronic spin in diamondNature, 2008
- High-sensitivity diamond magnetometer with nanoscale resolutionNature Physics, 2008
- Nuclear magnetic resonance imaging with 90-nm resolutionNature Nanotechnology, 2007
- 3D MR microscopy with resolutionJournal of Magnetic Resonance, 2002
- One Micrometer Resolution NMR MicroscopyJournal of Magnetic Resonance, 2001