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haowenping

木虫 (著名写手)


[交流] 【求助】这种情况下INCAR中的EDIFF和EDIFFG应该怎么设置?

The optimal atomic positions are determined until the magnitude of the forces acting on all atoms is less than 0.001 eV  *(埃的-1次方)(which converges the total energy within 0.01 meV).
像这种情况下,EDIFF和EDIFFG的参数怎么设置呢?谢谢各位大虾!
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zzy870720z(金币+1): 谢谢提示 2011-03-17 13:50:09
haowenping(金币+2): 很感激! 2011-03-17 18:11:23
引用回帖:
Originally posted by haowenping at 2011-03-16 14:59:05:
The optimal atomic positions are determined until the magnitude of the forces acting on all atoms is less than 0.001 eV  *(埃的-1次方)(which converges the total energy within 0.01 meV).
像这种情 ...

如果是想达到这句话所说的精度的话,需要:
EDIFFG = -0.001
EDIFF = 1E-6
不过一般不需要这么高的精度
8楼2011-03-17 11:28:09
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fanchen021

铁杆木虫 (正式写手)


★ ★
haowenping(金币+2):谢谢参与
haowenping(金币+1): 谢谢了! 2011-03-16 15:45:26
zzy870720z(金币+1): 谢谢提供 2011-03-16 17:12:56
haowenping(金币+2): 谢谢! 2011-03-17 09:22:34
EDIFFG = -0.001
EDIFF = 1E-6 (仅供参考)
2楼2011-03-16 15:16:31
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haowenping

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引用回帖:
Originally posted by fanchen021 at 2011-03-16 15:16:31:
EDIFFG = -0.001
EDIFF = 1E-6 (仅供参考)

你自己也不是很确定啊!希望还有人能够给点建议,谢谢!
3楼2011-03-17 09:22:21
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lono75

铁杆木虫 (著名写手)


★ ★
haowenping(金币+2):谢谢参与
zzy870720z(金币+1): 鼓励交流 2011-03-17 09:44:48
EDIFF=1E-5
EDIFFG=-1E-3
4楼2011-03-17 09:35:31
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