Enter an atomic species: Pd Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_JeongParkDo_2018_PdCo__MO_101997554790_001 Enter a lattice constant (m): 3.889087289571762e-10 WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 6.259e-09*i) WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 6.259e-09*i)