Because this configuration corresponds to the ground-state for SIA diffusion, the obtained value of ~-3.2 eV can be considered to the minimum of V(r),Vmin. Then, the boost energy, E, was set at 3.1 eV above the minimum potential energy, Vmin, while sufficiently lower than the average SIA energy (~2.7 eV) at 110 dumbbell configuration as a saddle point for SIA diffusion. Th