Fig. 5: Symmetry-decomposed elastoresistance coefficients.

Calculated with the redefined \({\bar{m}}_{\alpha }\) (see text). a \({\bar{m}}_{{A}_{1g}}\) calculated from ϵ_xx∥[110] data. b \({\bar{m}}_{{B}_{2g}}\). c \({\bar{m}}_{{B}_{1g}}\). The strain symmetry channels are illustrated in the upper right of each panel. The insets in panels b and c show a zoomed view. The error bars take into account the uncertainty in R₀. Due to large uncertainties in R₀ for the high-T_c sample Ba_0.4K_0.6, we have plotted m_α instead of \({\bar{m}}_{\alpha }\) for this sample (points with thick edges).