Fig. 3
From: Doping induced Mott collapse and possible density wave instabilities in (Sr1−xLax)3Ir2O7
Evolution of tunneling spectra across IMT. a–c Binned spectra for x = 0.032, 0.039, and 0.048 samples. Differential conductance at −40, −40, and 100 meV were chosen to classify the spectra for a–c, respectively. Then the spectra are split into 30 groups with equal population. Green/red curves denote more insulating/metallic behavior in a and b. d binned spectra in a larger energy range on the x = 0.032 samples, based on the differential conductance at 0 mV. Inset: normalized spectra with shifted energy to compare the overall line shape above Fermi level. Set point: 160 mV, 800 pA for a; 100 mV, 180 pA for b; −300 mV, 700 pA for c, and 600 mV, 4 nA for d
