Enter a species (e.g. Al, Fe): Cu Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_EtesamiAsadi_2018_Cu__MO_227887284491_002 Enter hexagonal lattice constants 'a' and 'c' (m): 2.560819428175455e-10, 4.181800614957108e-10