Electron spin resonance spectroscopy of small ensemble paramagnetic spins using a single nitrogen-vacancy center in diamond

Abstract

A nitrogen-vacancy (NV) center in diamond is a promising sensor for nanoscale magnetic sensing. Here we report electron spin resonance (ESR) spectroscopy using a single NV center in diamond. First, using a 230 GHz ESR spectrometer, we performed ensemble ESR of a type-Ib sample crystal and identified a substitutional single nitrogen impurity as a major paramagnetic center in the sample crystal. Then, we carried out free-induction decay and spin echo measurements of the single NV center to study static and dynamic properties of nanoscale bath spins surrounding the NV center. We also measured ESR spectrum of the bath spins using double electron-electron resonance spectroscopy with the single NV center. The spectrum analysis of the NV-based ESR measurement identified that the detected spins are the nitrogen impurity spins. The experiment was also performed with several other single NV centers in the diamond sample and demonstrated that the properties of the bath spins are unique to the NV centers indicating the probe of spins in the microscopic volume using NV-based ESR. Finally, we discussed the number of spins detected by the NV-based ESR spectroscopy. By comparing the experimental result with simulation, we estimated the number of the detected spins to be $\le$ 50 spins.

15 pages and 5 figures

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Cited by in corpus (13)

• Electron-electron double resonance detected NMR spectroscopy using ensemble NV centers at 230 GHz and 8.3 Tesla
• Demonstration of NV-detected ESR spectroscopy at 115 GHz and 4.2 Tesla
• Sensitive spin detection using an on-chip SQUID-waveguide resonator
• Understanding the Linewidth of the ESR Spectrum Detected by a Single NV Center in Diamond
• Reduction of surface spin-induced electron spin relaxations in nanodiamonds
• Coherence properties of NV-center ensembles in diamond coupled to an electron-spin bath
• Demonstration of NV-detected ${}^{13}$C NMR at 4.2 T
• Quantum Sensing Enhancement through a Nuclear Spin Register in Nitrogen-Vacancy Centers in Diamond
• Nanoscale spin detection of copper ions using double electron-electron resonance at room temperature
• Probing NV and SiV charge state dynamics using high-voltage nanosecond pulse and photoluminescence spectral analysis
• Optimization of the double electron-electron resonance for C-centers in diamond
• Detection of Electron Paramagnetic Resonance of Two Electron Spins Using a Single NV Center in Diamond
• Generation of spin-squeezed states using dipole-coupled spins