[19a-F206-1~12] 6.2 Carbon-based thin films

[19a-F206-6] Quantum sensing nano-NMR: Observation of a linewidth of 13 Hz

〇Junichi Isoya¹, M. Pfender², N. Aslam², Hitoshi Sumiya³, Shinobu Ooda⁴, P. Neumann², C A. Meriles⁵, J. Wrachtrup² (1.Univ. of Tsukuba, 2.Univ. of Stuttgart, 3.SEI, 4.QRST, 5.CUNY)

Keywords:quantum sensing, diamond, nano NMR

In nano-NMR using a single NV center, by utilizing a field of 3 T and the nitrogen nuclear spin (T₁=260 s) as a memory, the resolution of ~1 ppm and the observation of the chemical shift were attained for ¹H and ¹⁹F in liquid samples of the volume smaller by 10-orders than that of conventional NMR. Here, by using ¹²C-enriched crystal as a model solid system having very weak dipolar coupling among nuclear spins, a linewidth of 13 Hz has been achieved for a single ¹³C nuclear spin.