Enter an atomic species: Pt Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_LeeShimBaskes_2003_Pt__MO_534993486058_000 Enter a lattice constant (m): 3.917371571063995e-10 WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 5.287e-09*i) WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 5.287e-09*i)