Generalized valence bond molecular dynamics at constant temperature
作者:
DOUGLAS A GIBSON,
EMILY A CARTER,
期刊:
Molecular Physics
(Taylor Available online 1996)
卷期:
Volume 89,
issue 5
页码: 1265-1276
ISSN:0026-8976
年代: 1996
DOI:10.1080/002689796173165
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The Nosé–Hoover chain thermostat of Martyna, Klein and Tuckerman has been adapted to work with our generalized valence bondab initiomolecular dynamics (AIMD) method, allowing us to perform AIMD in the canonical ensemble (constant number of particles temperature and volume). The canonical ensemble is ideal for simulated annealing which can be used to find global potential energy minima. The efficacy of constant-temperature-based AIMD simulated annealing is demonstrated for a Si6cluster and is compared with that of a non-constant-temperature-based method. It is found that in comparison with the velocity-scaling approach to annealing, constant-temperature based annealing gives better control over the annealing process and, at least in the case under study, results in attainment of the preferred geometry of the system more efficiently.
点击下载:
PDF (268KB)
返 回