Optimized molecular integration schemes for density functional theory ab initio molecular dynamics simulations

被引:14
|
作者
Termath, V
Sauer, J
机构
[1] Max-Planck Gesellschaft, Arbeitsgruppe Quantenchemie, Humboldt Universität zu Berlin, D-10117 Berlin
关键词
D O I
10.1016/0009-2614(96)00351-X
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Recently suggested improvements on molecular quadrature schemes are examined for use in ab initio molecular dynamics. The method is tested on three systems: the water molecule, its proton bound dimer H5O2+ and a hydrogen bound molecular complex of water. Significant savings over standard procedures for grid based density functional theory calculations are obtained with a combination of three techniques: multigrids, adapted grids, and prescreened grids. The validity of these techniques is demonstrated by a short ab initio molecular dynamics simulation of H5O2+.
引用
收藏
页码:187 / 194
页数:8
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