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physliebe

新虫 (小有名气)

[求助] HSE06+G0W0计算Cu2ZnSnS4的带隙竟然比HSE06的还小 已有1人参与

用vasp做的计算。求交流指导.金币有限,谢谢!
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KalaShayminS

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感谢参与,应助指数 +1
fzx2008: 金币+1, 谢谢回复 2015-10-09 10:54:28
没有问题,HSE本身是可以高估带隙的。
2楼2015-07-24 17:10:45
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physliebe

新虫 (小有名气)

引用回帖:
2楼: Originally posted by KalaShayminS at 2015-07-24 17:10:45
没有问题,HSE本身是可以高估带隙的。

对于Cu2ZnSnS4这个体系hybrid06的带隙和实验一致。

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3楼2015-07-24 17:13:53
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physliebe

新虫 (小有名气)

NOMEGA参数可能需要取大点,我用的是50

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4楼2015-07-24 17:25:42
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KalaShayminS

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physliebe: 金币+5, ★有帮助 2015-07-24 23:28:02
引用回帖:
3楼: Originally posted by physliebe at 2015-07-24 17:13:53
对于Cu2ZnSnS4这个体系hybrid06的带隙和实验一致。
...

G0W0略低估带隙也是很正常的,现在并没有什么方法保证能得到很准的带隙。
5楼2015-07-24 19:54:10
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zuocuiping

木虫 (职业作家)

请问你这个GW计算是不是用wannier计算的
谢谢
6楼2015-07-27 11:32:37
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