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a1597916

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[交流] 【求助】在MS中如何进行STM模拟 已有4人参与

在MS中如何进行STM模拟呢,哪位知道的说下,尽量说清楚点,我是个新手,不太懂,谢谢!!!
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franch

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a1597916(金币+1):谢谢参与
gavinliu7390(金币+1):谢谢交流! 2010-04-25 23:28
算energy 的时候把  STM 选项选上就行了,,,
遇弱则弱
2楼2010-04-25 20:56:37
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franch

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a1597916(金币+1): 2010-04-26 00:52
zzy870720z(金币+1): 谢谢指教 2011-09-03 17:22:25
结果出来后选不同的bias,,和实验可以比较
遇弱则弱
3楼2010-04-25 20:57:34
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mudannanzi

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a1597916(金币+1):谢谢参与
zzy870720z(金币+1): 谢谢提示 2011-09-03 17:22:35
energy把  STM 选项选上就ok了
迷糊
4楼2010-04-26 08:33:18
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韩D小希

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小木虫(金币+0.5):给个红包,谢谢回帖
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2楼: Originally posted by franch at 2010-04-25 20:56:37:
算energy 的时候把  STM 选项选上就行了,,,

这跟MS的版本有关么  我尝试算energy  怎么没有STM选项呢  

既然MS可以模拟,那VASP可以么
5楼2011-09-03 14:42:59
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顺水

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小木虫(金币+0.5):给个红包,谢谢回帖
zzy870720z(金币+2): 谢谢指教 2011-09-03 17:22:53
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5楼: Originally posted by 韩D小希 at 2011-09-03 14:42:59:
这跟MS的版本有关么  我尝试算energy  怎么没有STM选项呢  

既然MS可以模拟,那VASP可以么

采用VASP进行STM的计算步骤:
It works like this:
1) Relax.
2) Calculate CHGCAR and W***ECAR for the relaxed structure.
3) Generate PARCHG - partial density charge using the CHGCAR and W***ECAR.

PARCHG has the same format as CHGCAR. It is a density for a certain energy range.
It is calculated by setting LPARD=.TRUE.
The decisive parameters are NBMOD and EINT.
If NBMOD=-3 (the most sensible setting), then EINT contains an energy interval with respect to Fermi energy, for which the partial density will be evaluated.
For more details, see the pardens.F file.

Thus, the typical setup for generating PARCHG for STM is:
LPARD=.TRUE.
NBMOD=-3
EINT=-0.1 0.1
(plus other standart INCAR settings)

As soon as you have PARCHG, you can calculate the STM images
either by showing one plane of the PARCHG (constant distance mode) or showing some isosurface (constant current mode).
In our group an utility th_stm was used together with the data explorer (www.opendx.org).
However -
I just finished working on the STM applet for p4vasp
6楼2011-09-03 15:55:59
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