Figure 4: Nature Communications

Fig. 4

From: Discovery of superconductivity in quasicrystal

Fig. 4

Electrical resistivity. a Temperature dependence of normalized electrical resistivity. ρ 280 K denotes the resistivity at T = 280 K. The samples plotted are the as-cast 1/1AC_A, E, F, G samples, the annealed 1/1AC_B, C, D samples, the 2/1AC sample, and the QC sample. The 1/1AC_G is a mother ingot of the QC. Inset: Electrical resistivity at T= 280 K as a function of Al content. The broken line is a guide to the eyes: note that the resistivity of the QC and the 2/1AC is larger than that of the 1/1AC samples. b Temperature dependence of normalized resistivity of the QC and the 2/1AC in an expanded scale below 50 K. The data are shifted vertically for clarity. Note that they show the negative temperature coefficient of resistivity