[8p-Z05-1~20] 6.2 Carbon-based thin films

△ [8p-Z05-13] Improvement of charge stability and spin-chorenece properties of near-surface NV centers in diamond

〇Tetsuri Nishikawa¹, Akira Watanabe¹, Hiromitsu Kato², Masanori Fujiwara¹, Toshiharu Makino², Satoru Yamasaki², David Ernst Herbschleb¹, Norikazu Mizuochi¹ (1.Kyoto Univ., 2.AIST)

Keywords:diamond, magnetic sensor, NV center

The purpose of this study is to improve the sensitivity of a magnetic sensor using a single NV center in phosphorus-doped n-type diamond. I measured the coherence time T₂ and the charge stability of a single NV center near the surface of n-type diamond, by using the Hahn Echo method and single shot measurement respectively. I also compared these properties with that of a single NV center fabricated under the same conditions in diamond without phosphorus doping. In this presentation, I report on the preparation method of each sample and the details of the measurement results.