Fig. 3
From: Triple nitrogen-vacancy centre fabrication by C5N4Hn ion implantation
Coherence times and DEER of triple NV centre. a Classification of triple NV centres. b Schematic diagram of evaluated triple NV centres. c Pulse sequence in DEER measurements. d Hahn echo decay curves for NVA, NVB, and NVC. The closed circles represent the experimental echo data and the solid lines show the exponential fitting curves. The T2,Hahn values for NVA, NVB, and NVC were evaluated to be 279, 90, and 286 μs, respectively. e DEER measurements results signal of NVA–NVC, NVC–NVB, and NVA–NVB, when NVA, NVC, NVA were used as sensor. Closed circles represent the DEER data and solid lines show the fitting curves. The νdip of these pairs were evaluated to be 53.0, 24.1, and 4.6 kHz, respectively. f The DEER measurement results signal of NVC–NVA, NVB–NVC, and NVB–NVA, when NVC, NVB, NVB were used as the sensor, respectively. Similar νdip values of 56.6, 24.2, and 4.6 kHz were evaluated
