Fig. 4 | Nature Communications

Fig. 4

From: Revealing the role of lattice distortions in the hydrogen-induced metal-insulator transition of SmNiO3

Fig. 4

Transient state in proton regulation of SmNiO3. a Illustrating the transition from the electron itinerant state to highly electron localized state triggered by the transient process during hydrogen diffusion, instead of the physical presence of the hydrogen composition. The structural disordering owing to lattice distortions results in the opening in band gap. b Near edge X-ray absorption fine structure (NEXAFS) analysis for SmNiO3/SrTiO3 (red line) and SmNiO3/LaAlO3 (black line). c Ratios of the Ni/O composition measured for SmNiO3/SrTiO3, hydrogenated SmNiO3/SrTiO3, and SmNiO3/LaAlO3 by using the Rutherford backscattering (RBS). The upper scheme illustrates the RBS detection

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