Cu diamond SNAP_ZuoChenLi_2019_Cu__MO_931672895580_000 5.68219929933548 Optimization terminated successfully. Current function value: -25.062522 Iterations: 75 Function evaluations: 201 C11 = 54.274748 +/- 0.007336 GPa C12 = 38.090461 +/- 0.005187 GPa C44 = 20.091761 +/- 0.001834 GPa B = 43.485223 +/- 0.004235 GPa