Fig. 2 | npj Quantum Materials

Fig. 2

From: Doping induced Mott collapse and possible density wave instabilities in (Sr1−xLax)3Ir2O7

Fig. 2

Middle-layer La dopants. a, b dI/dV maps taken in the same region of Fig. 1b, at E = −40 and 0 meV. Clear atomic-scale features appear at the Fermi level (E = 0 meV). The blue dots denote the surface La1 dopants. c. Zoom-in of the area marked by white square in b. The white lines denote the Sr lattice obtained from the simultaneously acquired topography. d. A scatter plot showing the positions of the bright features seen in the dI/dV map in lattice coordinates. The Sr position is set to (0,0). e. Images of La1 and La2. Arrows mark the positions where the tunneling spectra in f were obtained. Scale bar: 2 nm. f. Tunneling spectra on La1 (green) and La2 (pink) with set point VS = 300 mV, It = 1.2 nA. The dark dashed curve denotes spectrum taken at a defect free region

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