Si sc SW_BalamaneHauchShi_2017Brittle_Si__MO_381114941873_002 2.77436792105 Optimization terminated successfully. Current function value: -3.141230 Iterations: 70 Function evaluations: 186 C11 = 467.095382 +/- 0.007336 GPa C12 = 102.981470 +/- 0.005187 GPa C44 = 37.616241 +/- 0.001834 GPa B = 224.352774 +/- 0.004235 GPa