Enter an atomic species: Au Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_LeeShimBaskes_2003_Au__MO_774911580446_000 Enter a lattice constant (m): 4.072935044765472e-10 WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 3.619e-09*i) WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 3.619e-09*i)