计算物理 ›› 2006, Vol. 23 ›› Issue (5): 564-570.

• 论文 • 上一篇    下一篇

LJ团簇和H2O团簇的局域优化计算

胡维军1, 孟现美1, 梅良模2, 李华2   

  1. 1. 山东师范大学物理系, 山东 济南 250014;
    2. 山东大学物理系, 山东 济南 250100
  • 收稿日期:2005-04-11 修回日期:2005-08-29 出版日期:2006-09-25 发布日期:2006-09-25
  • 作者简介:胡维军(1962-),男,山东,副教授,博士,从事低维系统的电子结构与团簇几何结构的优化计算研究.

A Fast Local Optimization Algorithm for LJ and H2O Clusters

HU Wei-jun1, MENG Xian-mei1, MEI Liang-mo2, LI Hua2   

  1. 1. Physics Department of Shandong Normal University, Jinan 250014, China;
    2. Physics Department of Shandong University, Jinan 250100, China
  • Received:2005-04-11 Revised:2005-08-29 Online:2006-09-25 Published:2006-09-25

摘要: 将传统分子动力学方法中时间积分步长定义成粒子的最大加速度、最大速度和变化的最大允许空间步长的函数,并给出了空间步长的确定方法.作为对这个算法有效性的检验,计算了较小Lennard-Jones团簇和H2O团簇的稳定结构,发现了新的(H2O)13的最小能结构.

关键词: 算法, LJ团簇, H2O团簇, 最小能结构

Abstract: The time step in a molecular dynamic method is defined as a function of the largest acceleration,the largest velocity and the largest allowed space step of a particle.Using this algorithm,the lowest-energy geometries of smaller LJ clusters and H2O clusters are obtained,and the efficiency of this algorithm is demonstrated.A lowest-energy structure of(H2O)13 is found.

Key words: algorithm, LJ cluster, H2O cluster, stable structure

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