Si fcc SW_BalamaneHaliciogluTiller_1992_Si__MO_113686039439_004 4.146581918 Optimization terminated successfully. Current function value: -16.827612 Iterations: 71 Function evaluations: 185 C11 = 738.819909 +/- 0.007336 GPa C12 = 780.249384 +/- 0.005187 GPa C44 = 93.358337 +/- 0.001834 GPa B = 766.439559 +/- 0.004235 GPa