Fig. 4: The effect of annealing on the nematic susceptibility of Fe1+yTe1−xSex.
From: Nematic fluctuations in an orbital selective superconductor Fe1+yTe1−xSex
a–c Temperature dependence of (a) normalized in-plane resistivity (R/R300K), b Hall coefficient RH and c elastoresistivity coefficient 2m66 of as-grown (black) and annealed (red) samples for x = 0.45. The vertical gray line marks the temperature below which the behavior of annealed and as-grown samples starts to deviate from each other. Inset of a shows the temperature dependence of the zero field cooling (ZFC) magnetic susceptibility measured at 100Oe (H∥ab). The superconducting volume fraction is significantly enhanced for the annealed sample.
