The 69th JSAP Spring Meeting 2022

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6 Thin Films and Surfaces » 6.2 Carbon-based thin films

[25p-E204-1~17] 6.2 Carbon-based thin films

Fri. Mar 25, 2022 1:30 PM - 6:15 PM E204 (E204)

Takayuki Iwasaki(Tokyo Tech), Norio Tokuda(Kanazawa Univ.), HIroki Morishita(Kyoto Univ.), Hideyuki Watanabe(産総研)

4:30 PM - 4:45 PM

△ [25p-E204-12] Magnetic field dependence of sensor properties of NV centers in nanodiamonds

〇(M2)Masahiro Fujie1, Izuru Ohki1, Masanori Fujiwara1, Ernst David Herbschleb1, Norikazu Mizuochi1 (1.Kyoto Univ.)

Keywords:Quantum sensor, Nanodiamond, NV center

We investigated the change of spin properties of NV centers in nanodiamonds under weak magnetic field, aiming to improve their sensitivity. We recorded ODMR spectra as a function of static magnetic field, and observed significant changes in spectral lineshape and linewidth. This is caused by (1) random orientation of nanoparticles and (2) intrinsic change of spin dephasing time. In this presentation, we will report the details of measurement results and analysis.