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凌云志123

金虫 (正式写手)

[求助] ISIF = 2 还是ISIF = 3?

最近想计算一个异质界面结构,文献中对该结构的计算方法中描述如下:
For all the interface structures considered, the calculations allowed for full relaxation by varying atomic configurations in space to minimize the Hellman-Feyman forces (using a combined blocked Davidson + RMM-DIIS algorithm) until the total forces on each ion were converged to within 0.02 eV/Å.

根据这个描述,文献的作者是用的ISIF=2 还是ISIF =3,大家什么意见?我个人倾向于ISIF=2
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凌云志123

金虫 (正式写手)

我之前按照界面的结构构造了模型,但是我用isif=3 结构始终不收敛,在3的基础上用2会收敛
2楼2016-11-15 19:54:25
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