Chemistry 版 (精华区)
发信人: zjliu (秋天的萝卜), 信区: Chemistry
标 题: 初学VASP(一) what's it?
发信站: BBS 哈工大紫丁香站 (Thu Jun 17 20:45:18 2004)
发信站: 日月光华
首先介绍参考文档
ftp://10.76.120.7/pub/软件使用介绍/VASP.pdf
http://cms.mpi.univie.ac.at/vasp/vasp/vasp.html
VASP = Vienna Ab-initio Simulation Package
VASP is a complex package for performing ab-initio quantum-mechanical
molecular dynamics (MD) simulations using pseudopotentials (如超软赝势US-PP)
or the projector-augmented wave (PAW) method and a plane wave basis set.
The approach implemented in VASP is based on the (finite-temperature)
local-density approximation with the free energy as variational quantity
and an exact evaluation of the instantaneous electronic ground state at
each MD time step.
它的好处主要包括
基组小适于第一行元素和过渡金属,
大体系计算快(<4000价电子),
适于平行计算(Unix/Linux)
其他特性还包括自动对称性分析、加速收敛算法另文涉及。
一个简单的VASP作业主要涉及四个输入文件:
INCAR(作业细节) POSCAR(体系坐标) POTCAR(赝势) KPONITS(k空间描述)
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