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

▼ [21a-232-9] Magnetic AC sensing with nitrogen-vacancy centres in phosphorus-doped diamond

〇Ernst David Herbschleb¹, Yuichi Maruyama¹, Takuya Danjo¹, Izuru Ohki¹, Hiromitsu Kato², Toshiharu Makino², Kan Hayashi¹, Hiroki Morishita¹, Masanori Fujiwara¹, Satoshi Yamasaki², Norikazu Mizuochi¹ (1.Kyoto Univ., 2.AIST)

Keywords:Nitrogen-vacancy centre, magnetic sensing, coherence time

Nanometre spacial resolution measurements of weak AC magnetic fields have many interesting applications in physics and biology. In our research, we use coherent control of individual electron spins residing in nitrogen-vacancy (NV) centres in n-type diamond at room temperature. In these phosphorus-doped samples, we were able to find many NV centres with coherence times over 2 ms. Using these NV centres, we measured the sensitivity for AC magnetic fields.