Spin properties of dense near-surface ensembles of nitrogen-vacancy centres in diamond

Abstract

We present a study of the spin properties of dense layers of near-surface nitrogen-vacancy (NV) centres in diamond created by nitrogen ion implantation. The optically detected magnetic resonance contrast and linewidth, spin coherence time, and spin relaxation time, are measured as a function of implantation energy, dose, annealing temperature and surface treatment. To track the presence of damage and surface-related spin defects, we perform in situ electron spin resonance spectroscopy through both double electron-electron resonance and cross-relaxation spectroscopy on the NV centres. We find that, for the energy ($4-30$~keV) and dose ($5\times 10^{11}-10^{13}$~ions/cm${}^2$) ranges considered, the NV spin properties are mainly governed by the dose via residual implantation-induced paramagnetic defects, but that the resulting magnetic sensitivity is essentially independent of both dose and energy. We then show that the magnetic sensitivity is significantly improved by high-temperature annealing at $\ge 1100^{\circ }$C. Moreover, the spin properties are not significantly affected by oxygen annealing, apart from the spin relaxation time, which is dramatically decreased. Finally, the average NV depth is determined by nuclear magnetic resonance measurements, giving $\approx 10$-17~nm at 4-6 keV implantation energy. This study sheds light on the optimal conditions to create dense layers of near-surface NV centres for high-sensitivity sensing and imaging applications.

arXiv comment12 pages, 7 figures

References in corpus (37)

• The nitrogen-vacancy colour centre in diamond
• High-sensitivity diamond magnetometer with nanoscale resolution
• Magnetometry with nitrogen-vacancy defects in diamond
• A robust, scanning quantum system for nanoscale sensing and imaging
• Avoiding power broadening in optically detected magnetic resonance of single NV defects for enhanced DC-magnetic field sensitivity
• Scanning magnetic field microscope with a diamond single-spin sensor
• Photo induced ionization dynamics of the nitrogen vacancy defect in diamond investigated by single shot charge state detection
• Magnetic spin imaging under ambient conditions with sub-cellular resolution
• Chip-scale nanofabrication of single spins and spin arrays in diamond
• Magnetic field imaging with NV ensembles
• High sensitivity magnetic imaging using an array of spins in diamond
• Surface-induced charge state conversion of nitrogen-vacancy defects in nanodiamonds
• Engineering shallow spins in diamond with nitrogen delta-doping
• Nanoscale NMR Spectroscopy and Imaging of Multiple Nuclear Species
• Quantum imaging of current flow in graphene
• Spectroscopy of Surface-Induced Noise Using Shallow Spins in Diamond
• Conversion of neutral nitrogen-vacancy centers to negatively-charged nitrogen-vacancy centers through selective oxidation
• Probing surface noise with depth-calibrated spins in diamond
• On the surface paramagnetism of diamond
• Implantation of labelled single nitrogen vacancy centers in diamond using 15N
• Dark states of single NV centers in diamond unraveled by single shot NMR
• Extending spin coherence times of diamond qubits by high temperature annealing
• High-Resolution Correlation Spectroscopy of 13C Spins Near a Nitrogen-Vacancy Center in Diamond
• NMR Technique for Determining the Depth of Shallow Nitrogen-Vacancy Centers in Diamond
• Sensing of Fluctuating Nanoscale Magnetic Fields Using NV Centres in Diamond
• Quantum many-body theory for electron spin decoherence in nanoscale nuclear spin baths
• Tailoring spin defects in diamond
• Increasing the coherence time of single electron spins in diamond by high temperature annealing
• Probing molecular dynamics at the nanoscale via an individual paramagnetic center
• Spurious harmonic response of multipulse quantum sensing sequences
• Scanning Quantum Decoherence Microscopy
• High density NV sensing surface created via He^(+) ion implantation of (12)^C diamond
• Detecting External Electron Spins Using Nitrogen-Vacancy Centers
• Effect of Low-Damage Inductively Coupled Plasma on Shallow NV Centers in Diamond
• Wide-band, nanoscale magnetic resonance spectroscopy using quantum relaxation of a single spin in diamond
• Microwave-Free Nuclear Magnetic Resonance at Molecular Scales
• Electron spin contrast of Purcell-enhanced nitrogen-vacancy ensembles in nanodiamonds

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