Enter an atomic species: Au Enter a cubic lattice type: fcc Enter a model name: Sim_LAMMPS_ADP_WangXuQian_2021_AuRh__SM_066295357485_000 Enter a lattice constant (m): 4.080000087618828e-10 WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 5.214e-09*i) WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 5.214e-09*i)