Si bcc SNAP_ZuoChenLi_2019_Si__MO_869330304805_000 3.1337566822767258 Optimization terminated successfully. Current function value: -9.596909 Iterations: 73 Function evaluations: 195 C11 = 73.815683 +/- 0.007336 GPa C12 = 130.546266 +/- 0.005187 GPa C44 = -20.758244 +/- 0.001834 GPa B = 111.636072 +/- 0.004235 GPa