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eboat

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What are the major problems for getting DFT calculations of oxide surfaces to match experiments?

[ Last edited by wuchenwf on 2009-6-21 at 19:42 ]
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eboat

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zzgyb(金币+2,VIP+0):谢谢你的提示可以让大家更广泛的思考,欢迎继续关注计算模拟版!
I think that major problems for getting DFT calculations of oxide surfaces to match experiments include:

   (1) the structural stability of the surface under the different atmospheres, e.g. how to deal with the surface polaritity and the possible surface reconstruction;

   (2) there may be the strong correlation for the transition metal or rare metal oxide such as Fe2O3, Cr2O3, EuO and CeO2. To overcome the deficiency of the common LDA/GGA for the strong correlation system, we have to consider the columb repulsion interaction among the d or f electrons;
3楼2008-02-22 08:50:59
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csfn

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这个问题比较笼统~
2楼2008-02-21 22:33:42
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csfn

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lei0736(金币+2,VIP+0):多谢解答及建议
1)有极性的表面必须考虑。这个比较复杂,不过极性表面的处理现在比较多,可以参考下别人的工作。
2)采用下GGA+U处理吧
4楼2008-03-03 18:48:59
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