Large-scale electronic-structure calculations based on the adaptive finite-element method

被引:101
|
作者
Tsuchida, E [1 ]
Tsukada, M [1 ]
机构
[1] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
关键词
density-functional theory; finite-element method; molecular dynamics;
D O I
10.1143/JPSJ.67.3844
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The adaptive finite-element method proposed in our previous work [Phys. Rev. B 54 (1096) 7602] is extended to fully self-consistent calculations of realistic materials. Our method is highly adaptive, sparse, parallel, and suited for the O(N) methods, thanks to the localized finite-element basis functions. Accurate ionic forces can also be calculated within practical time usage. Applications to the structural properties of diamond, c-BN, and the C-60 molecule, and molecular dynamics within O(N-3) scaling are shown first, followed by detailed error analyses. Then the O(N) method based on the orbital formulation is realized within our approach.
引用
收藏
页码:3844 / 3858
页数:15
相关论文
共 50 条