Enter an atomic species: Al Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_KimKimLee_2009_AlMg__MO_058537087384_001 Enter a lattice constant (m): 4.044650822877884e-10 WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 2.292e-09*i) WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 2.292e-09*i)