Microscopy from Scientific Research

Cross-sectional HAADF-STEM image of a single-crystalline T -Nb 2 O 5 thin-film grown on a LSAT(110) substrate viewed along the LSAT [110] direction. Left inset, Nb 4 d orbital state changes from d 0 to d 1 due to electron doping via Li intercalation. Overlaid yellow and grey spheres represent Nb and O atoms, respectively. Green dashed lines represent the vertical ionic transport channels (4 g layers) viewed from T -Nb 2 O 5 [810] .

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