Fig. 1.
Temperature dependence of selected physical properties of La-438. (A) Electrical resistivity in the ab plane. (B) In-plane magnetic susceptibility for 5 T. B, Inset shows the details around the transition. FC-C, data collected on cooling under field (black curve); ZFC-W, data collected on warming after zero field cooling (red circles). (C) Heat capacity Cp/T vs. T in zero field. C, Inset shows the λ-like shape of the 105-K anomaly in Cp. Open blue circles, difference between the data and the fit; red curve, polynomial background fit; solid back points, data.