On the resolution of identity Coulomb energy approximation in density functional theory

被引:53
|
作者
Skylaris, CK [1 ]
Gagliardi, L [1 ]
Handy, NC [1 ]
Ioannou, AG [1 ]
Spencer, S [1 ]
Willetts, A [1 ]
机构
[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
来源
关键词
RI-J; DFT; Coulomb; auxiliary;
D O I
10.1016/S0166-1280(99)00434-0
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
The Resolution of the Identity approximation for the Coulomb (RI-J) energy in Density Functional Theory improves the computational efficiency of large-scale calculations but requires the use of a second, or "auxiliary" basis set. We examine the performance of some of the existing auxiliary basis sets with a variety of basis sets and molecules. We determine the accuracy of the RI-J approximation for these basis sets and suggest criteria for the selection of combinations of basis set and auxiliary basis set. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:229 / 239
页数:11
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