fig4

Figure 4. Lattice profiles and strain maps of kink-kink configurations with different system sizes and wall-wall distance d. (A-D) Lattice profiles for the bottom surfaces, top surfaces, lower walls and upper walls of samples with d = 10 l.u., 82 l.u. and 200 l.u. Strain maps in (E) are colour-coded according to the atomic-level normal strain: ɛ_xx with a wall-wall distance of d = 200 l.u. The sample sizes for (A-D) are 301 l.u. × 300 l.u., 501 l.u. × 500 l.u., 701 l.u. × 700 l.u., 901 l.u. × 900 l.u., 1,001 l.u. × 1,000 l.u., 1,201 l.u. × 1,200 l.u., 1,401 l.u. × 1,400 l.u., and 1,601 l.u. × 1,600 l.u. The black lines indicate the bottom surface, lower wall, upper wall, and top surface.