Cu fcc Morse_Shifted_GirifalcoWeizer_1959LowCutoff_Cu__MO_673777079812_002 3.6533440426 Optimization terminated successfully. Current function value: -13.096756 Iterations: 71 Function evaluations: 183 C11 = 173.254056 +/- 0.007336 GPa C12 = 116.958012 +/- 0.005187 GPa C44 = 117.867467 +/- 0.001834 GPa B = 135.723360 +/- 0.004235 GPa