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dingxiaojun

至尊木虫 (知名作家)

虫王

[求助] 晶格常数优化能量一直降低

求助:优化SrTcO3 晶格常数,得到的能量和体积的曲线 随着提及的增大,能量一直降低,求助,是什么原因?
INCAR :
SYSTEM=OTS
ENCUT=520
ISTART=0;ICHARG=2
ISMEAR=-5
VOSKOWN=1
NBANDS=40
ISIF=2
EDIFF=1E-4;EDIFFG=-0.01
PREC=Accurate
EtVo.dat :
50.6500 -16.319399
52.7300 -17.596637
54.8700 -18.699527
57.0700 -19.645608
59.3200 -20.451296
61.6300 -21.132742
64.0000 -21.700957
66.4300 -22.170621
68.9200 -22.552098
71.4700 -22.853548
74.0900 -23.084483
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sxm2012

木虫 (小有名气)

好像ISIF应该等于4
2楼2013-09-02 19:52:13
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xj20120828

木虫 (正式写手)

请问楼主找到是什么原因了吗?
3楼2014-02-27 08:47:51
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