Quantify NVH⁻ concentrations across growth temperatures

Determine the concentrations of NVH⁻ defects in the laboratory-grown CVD diamond samples S1 and S3 as a function of growth temperature, thereby resolving the temperature-dependent incorporation of these hydrogen-related defects.

Background

High-resolution NV-DEER measurements identified hydrogen-related side resonances in the laboratory-grown CVD diamond samples. The spectral analysis indicated that NVH⁻ defects were the predominant hydrogen-related species in samples S1 and S3, but the measured resonances were insufficiently pronounced to support quantitative concentration analysis across the different growth temperatures. Establishing these concentrations would clarify how CVD growth conditions control NVH⁻ incorporation and the resulting spin environment.

References

It should be noted that in other samples (S1, S3) we found mainly NVH defect, but could not determine their concentration from the growth at different temperatures due to the fact the detected resonances were not well pronounced to allow for quantitative analysis.

— Irradiation-Induced Spin Bath Evolution and as-Grown Hydrogen Defects in CVD Diamond Revealed by NV-Based DEER Spectroscopy  (2608.17619 - Rubinas et al., 18 Aug 2026) in Section II.D, “Hydrogen-related side resonances and composite defect modeling”