Fig. 9: Elastoresistivity measurements. | npj Quantum Materials

Fig. 9: Elastoresistivity measurements.

From: Ubiquitous enhancement of nematic fluctuations across the phase diagram of iron based superconductors probed by the Nernst effect

Fig. 9

Elastoresistivity of the Ba(Fe1−xRhx)2As2 series. a Temperature-dependence of the strain (ϵ) derivative of the relative variation of the resistivity (η = Δρ/ρ) for a sample with x = 0.025. The red curves show the Curie-Weiss fit in the nematic fluctuation regime above the structural transition. b Phase diagram of the nematic susceptibility of the Ba(Fe1−xRhx)2As2 series. TC, TN, TS, and TNem represent the superconducting, the magnetic, the structural, and the nematic critical temperature, respectively. The colour scale reproduces the magnitude of dη/dϵ, while the light yellow region corresponds to the superconducting dome.

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