Enter an atomic species: Pd Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_KoLee_2013_VPdY__MO_046547823135_002 Enter a lattice constant (m): 3.889087237417698e-10 WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 4.228e-09*i) WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 4.228e-09*i)