fig5

Figure 5. Interaction energies of kink-kink configurations with a clamped bottom surface. (A) Strain fields of the thin film with a thickness of Δ = 100 l.u. and wall-wall distances of d = 42 l.u. The strain map was colour-coded according to the atomic-level strain ɛ_xx. (B) Lattice displacements of fixed bottom surface, lower wall, upper wall, and top surface due to the kink-kink interactions. (C) The variation of interaction energies as a function of wall-wall distance. The data points in (C) are fitted by using the equation E_kink-kink = E₀ - A × d^B with E₀ ~ 0 (noninteracting kinks), A = 0.832 eV l.u. and B = -1. The scaling exponent of -1 is shown in (D).