Fig. 7
From: A DFT study on hydrogen diffusion across zinc surfaces at low coverage
Full trajectory on the surface as 2D coordinates represented as circles; atoms in the surface are represented as triangles. Every 30-th step is represented in the plot, as explained in the caption of Fig. 4. The Z coordinate of the hydrogen atom is indicated by the color of the circles and the corresponding color-bars. The average Z coordinate of the Zn atoms in the surface is 14 Å.
