This potential can clarify the physical metallurgical reasons for the materials phenomena (sluggish diffusion and micro-twining at cryogenic temperatures) and shows the effect of individual elements on solid solution hardening for the equiatomic CoCrFeMnNi HEA. A significant number of stable vacant lattice sites with high migration energy barriers exists and is thought to cause the sluggish diffusion. And also, this potential predict that the hexagonal close-packed (hcp) structure is more stable than the face-centered cubic (fcc) structure at 0 K, that paper proposes as the fundamental reason for the micro-twinning at cryogenic temperatures.