Figure 2: The response of the NV centre spin to a uniaxial stress.
From: Hybrid sensors based on colour centres in diamond and piezoactive layers
(a) The stray field component parallel (
) and perpendicular (
, inset) to the NV axis. (b) The separation Δ between two resonance frequencies in the ODMR spectra as a function of the stress σ. The value of Δ is 15.55 GHz for σ=0. The dimension of the Terfenol-D film is chosen as (15 nm)3, and the distance from the NV centre to the interface is d=15 nm. The applied external magnetic field is B0=2,350 G along the ‹001› direction, and the stress is along the ‹111› direction. The temperature is 300 K.
