Fig. 3: Distribution of T2 and its temperature dependence.
From: Critical fluctuations and noise spectra in two-dimensional Fe3GeTe2 magnets
a Statistical distribution of T2 across the field of view, measured from Sample #1 at 175 K. The two peaks in the histogram correspond to pixels inside and outside the FGT sample, respectively. The inset shows the corresponding T2 map. The distribution of α is presented in Supplementary Section 6. b Temperature-dependent T2 measured from eight FGT samples (Sample #1–#8) above Tc. Data points with T2 ≤ 500 ns are excluded due to insufficient fitting reliability. By adjusting the NV-FGT distance, this can be resolved and Fig. 4b shows the complete measurement across Tc. On sample #6, two independent measurements were performed. Data marked with empty squares highlight that T2 is unaffected when far from Tc. Scale bar: 5 μm.
