Figure 1: Scanning transmission electron microscopy data on α-RuCl3 films.
From: Atomic-scale observation of structural and electronic orders in the layered compound α-RuCl3
(a) Z-contrast STEM image of α-RuCl3 film (raw data). Inset shows filtered data, where brown and blue crosses correspond to the centers of Ru/Cl columns and Cl columns, respectively. (b,c) Histogram-based visualization of inter-column distances for six nearest neighbours of Ru/Cl columns (b) and Cl columns (c). Dotted red vertical lines show the value of inter-column distances expected for perfect trigonal symmetry. The red arrow in c indicates the presence of a well-defined shoulder originating from an increase in nearest neighbour distances of Cl columns. (d) Line profile illustrating a modulation of inter-column distances for Cl and Ru/Cl columns with respect to the value of 198 pm for ideal trigonal symmetry.
