计算物理 ›› 1989, Vol. 6 ›› Issue (2): 139-148.

• 论文 • 上一篇    下一篇

薄膜LAPW方法的基函数研究与吸附系统功函数

陈陆君1, 罗恩泽1, 王宁2, 王鼎盛3   

  1. 1. 西安电子科技大学物理系;
    2. 北京真空电子器件研究所;
    3. 中国科学院物理研究所
  • 收稿日期:1988-03-23 出版日期:1989-06-25 发布日期:1989-06-25

THE STUDY OF BASIS FUNCTION IN LAPW METHOD AND WORK FUNCTION OF OVERLAYER-SUBSTRATE SYSTEM

Chen Lujun1, Luo Enze1, Wang Ning2, Wang Dingsheng3   

  1. 1. Department of physics, XIDIAN University, Xi'an;
    2. Beijin vacuum Electronic Devices Research Institute;
    3. Institute of physics, Academia sinia, Beijing
  • Received:1988-03-23 Online:1989-06-25 Published:1989-06-25

摘要: 本文提出了一种适应于jellium-slab模型的薄膜LAPW基函数的多能量参数函数与微分并用的描述方法,通过计算具有三层slab的Cs/W吸附系统,对这种方法的稳定性、精确性作了检验并进行了分析和讨论,总结了各真空基函数在总波函数中的权重的规律,即只有Kmn2较小的几个真空基函数对总波函数的贡献才是主导的,这对LAPW方法的研宄有一定的参考意义。

Abstract: A method with a set of improved basis functions in vaouum-jellium region for Film-LAPW, method suited to jellium/slab model is proposed. The calculations for examination of this method, with three layers of W slab to simulate the W(100) surface covered with Cs overlayer is made. The results are more stabilized and accurate, and are much closer to experiments. The contribution weights of each vaccum basis function to the wave function is analysed.