Fig. 4: Hc2 under c-axis stress.
From: The superconductivity of Sr2RuO4 under c-axis uniaxial stress
a, b Susceptibility versus applied field ∥c for samples 2 and 3, at fixed temperatures of 300 mK and 310 mK. For sample 3, the raw data are plotted. For sample 2, the signal magnitude shifted from run to run, probably due to slipping of the coils against the sample, so data are normalized by the readings at 0 and 100 mT. The horizontal lines indicate the thresholds for determination of Hc2. c Hc2(T ≈ 0.3K) versus stress for samples 2 and 3. d \({H}_{{{{{{{{\rm{c2}}}}}}}}}/{T}_{{{{{{{{\rm{c}}}}}}}}}^{2}\), normalized by its zero-stress value, versus stress for sample 3.
