Optically detected nuclear quadrupolar interaction ofN14in nitrogen-vacancy centers in diamond

  title={Optically detected nuclear quadrupolar interaction ofN14in nitrogen-vacancy centers in diamond},
  author={Chang-Seok Shin and M. Butler and Hai-Jing Wang and Claudia Esther Avalos and Scott J. Seltzer and Ren-Bao Liu and Alexander Pines and Vikram S. Bajaj},
  journal={Physical Review B},
We report sensitive detection of the nuclear quadrupolar interaction of the 14N nuclear spin of the nitrogen-vacancy (NV) center using the electron spin echo envelope modulation technique. We applied a weak transverse magnetic field to the spin system so that certain forbidden transitions became weakly allowed due to second-order effects involving the nonsecular terms of the hyperfine interaction. The weak transitions cause modulation of the electron spin-echo signal, and a theoretical analysis… 

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