Ab initio molecular dynamics simulations with linear scaling: application to liquid ethanol

The structural and dynamical properties of liquid ethanol (C2H5OH) at ambient conditions have been studied by ab initio molecular dynamics simulations using a large supercell containing 125 molecules (1125 atoms). The results obtained from a trajectory of 10 ps are found to be in good agreement with available experimental data. Without sacrificing accuracy, the computational cost of simulations is reduced by more than a factor of four by the linear scaling algorithm based on the augmented orbital minimization method.

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