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girl1202

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[求助] 查看总能和确定基态结构的问题 已有1人参与

建立了Ga2As6-离子团簇的4种可能结构,用VASP进行了结构优化和自洽计算,调取出4种构型的的总能,有的为负值,有的为正值,根据这些如何来确定基态结构?调取的结果底下附有图片,







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jpchou

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【答案】应助回帖

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感谢参与,应助指数 +1
fzx2008: 金币+2, 谢谢指导 2014-08-27 13:43:03
能量不會是正值
vasp 沒有編好~所有結果都是有問題的
2楼2014-08-05 18:14:37
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girl1202

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引用回帖:
2楼: Originally posted by jpchou at 2014-08-05 18:14:37
能量不會是正值
vasp 沒有編好~所有結果都是有問題的

但是也有计算下来的能量负值的,会不会是建立的模型不合理
3楼2014-08-06 18:38:47
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jpchou

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fzx2008: 金币+3, 谢谢指导 2014-08-27 13:44:23
???????:
3?: Originally posted by girl1202 at 2014-08-06 18:38:47
??????м??????????????????????????????????????...

????????Y??????????????????
??~?o????~??????????????????????
??????????
???????F????????N????
1. vasp ?]????
    ?????x??????m??????W?????? (MKL)
    ??????? eigenvalue ?r?????????????????????????????
    ?????@?N??r
   ?@??汾?? VASP??????????
    (??o???????????Y??"????"????????????Y???????e??)

2. ????N??r????????????????????
    ????????? HSE06 ???
    ????? ALGO = fast ??????????????
    ????? ALGO = ALL ???}???Q??
    ?@????? HSE ???? algorithm ??????????
    ???? ALGO=fast ????m???
    ????????????????? HSE calculation
4楼2014-08-06 19:05:08
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girl1202

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???????:
4?: Originally posted by jpchou at 2014-08-06 19:05:08
????????Y??????????????????
??~?o????~??????????????????????
??????????
???????F????????N????
1. vasp ?]????
    ?????x??????m??????W?????? (MKL)
    ??????? eigenvalue ?r?? ...

?????????????GaAs????INCAR ????????????????????????????????????????
SYSTEM=GaAs-fcc
ISTART=0;ICHARG=2
ISMEAR=0;SIGMA=0.1
ENCUT=300
LREAL=.FALSE.
PREC=Accurate
5楼2014-08-08 17:19:45
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jpchou

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???????:
5?: Originally posted by girl1202 at 2014-08-08 17:19:45
?????????????GaAs????INCAR ????????????????????????????????????????
SYSTEM=GaAs-fcc
ISTART=0;ICHARG=2
ISMEAR=0;SIGMA=0.1
ENCUT=300
LREAL=.FALSE.
PREC=Accurate...

??????????}
?? VASP ????????????}
???Мy?^???ε? bulk ????? (Au ?????)
?Y???????????
6楼2014-08-08 19:01:15
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girl1202

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???????:
6?: Originally posted by jpchou at 2014-08-08 19:01:15
??????????}
?? VASP ????????????}
???Мy?^???ε? bulk ????? (Au ?????)
?Y???????????...

?  ???????? ?????????????????μ?????????????????????????????????Щ????????
7楼2014-08-11 09:24:46
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