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cenwanglai榮譽版主 (知名作家)
老和山猥瑣派九段
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[交流]
看看別人僅用VASP做DOS計算發(fā)好文章(兩篇PRL) 已有17人參與
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I have not read all your question, but I do know something to answer your question about 'why add one more electron in N's orbital when calculate XAS'. This method is usually called 'supercell approximation', it is very useful when you wan to calculated optical properties like absorb spectrum, by making fake excited state. Firstly, you have to make a supercell, in the case from that paper, I guess they already created a supercell in the order to dope the system. Secondly, by removing one electron from the inner cell of N and add it to the valence shell, to simulate the excited state. Thirdly, calculate the spectrum of the supercell, it will fit experimental results very well. |
鐵桿木蟲 (正式寫手)
木蟲 (小有名氣)
榮譽版主 (知名作家)
老和山猥瑣派九段
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