计算物理 ›› 1990, Vol. 7 ›› Issue (1): 45-49.

• 论文 • 上一篇    下一篇

一种改进CV-α-SCC原子集团程序收敛速度的方法

潘卫, 郑庆祺   

  1. 中国科学院固体物理研究所, 合肥 230031
  • 收稿日期:1988-11-14 出版日期:1990-03-25 发布日期:1990-03-25

A METHOD OF IMPROVING THE COVERGENCE RATE OF DV-α-SCC CLUSTER CALCULATION

Pan Wei, Zheng Qingqi   

  1. Institute of Solid State Physics, Academia Sinica
  • Received:1988-11-14 Online:1990-03-25 Published:1990-03-25

摘要: DV-Xα-SCC原子集团计算方法在应用到大原子集团或低对称体系时会遇到收敛速度变慢,或者发生不能收敛的振荡情况。本文借助于Broyden提出的一种加速收敛方法并将其移殖到SCC的收敛过程中,结果表明提高收敛速度的效果是明显的。

Abstract: A method of improving the convergence in the DV-α-SCC calculation are studied in the scheme suggested by Broyden. The obtained result reveals that the convegence of SCC calculations is greatly accelerated by our new calculation procedure. This method may improve the problem of relative slow convergence or even non convegent which are usually happened in the DV-α-SCC calculations for large cluster with low symmetry.