[21a-232-1~12] 6.2 Carbon-based thin films

△ [21a-232-10] NMR measurements using shallow NV centers in the nitrogen-terminated diamond(２)

〇(B)Tetsuya Tatsuishi¹, Takahiro Sonoda¹, Sora Kawai¹, Hayate Yamano¹, Jorge J. Buendia¹, Taisuke Kageura¹, Yu Ishii¹, Kiro Nagaoka¹, Ryosuke Fukuda¹, Takashi Tanii¹, Moriyoshi Haruyama^2,3, Keisuke Yamada², Shinobu Onoda², Wataru Kada³, Osamu Hanaizumi³, Alastair Stacey⁴, Kazuhiro Kanda⁵, Masaharu Uemura^5,6, Tokuyuki Teraji⁷, Junichi Isoya⁸, Shozo Kono⁹, Hiroshi Kawarada^1,9 (1.Waseda Univ., 2.QST, 3.Gunma Univ., 4.Univ. of Melbourne, 5.Univ. of Hyogo, 6.SALLC, 7.NIMS, 8.Univ. of Tsukuba, 9.ZAIKEN)

Keywords:NV center, NMR, Nitrogen termination

We are focusing on nitrogen-termination of diamond surface by nitrogen radical exposure as a method to stabilize negative charge of NV center, because it is essential for nanoscale NMR application using NV center. We have successfully detected nuclear spin signals of ¹H using a shallow NV center in nitrogen-terminated diamond fabricated by using nitrogen gas containing 4%-H₂. At this time, we could fabricate the nitrogen-terminated diamond by using pure nitrogen gas and detect nuclear spin signals of ¹H.