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sevenfalls

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[求助] 关于vasp计算前验证赝势的问题

小弟新手,按照侯老师的手册做验证赝势的测试,首先做Al的测试
INCAR,POSCAR,KPOINTS完全按照侯老师给出的例子做
INCAR
SYSTOM=Al atom
ENCUT=250 eV
NELMDL=5
ISMEAR=0;SIGMA=0.1

POSCAR
atom
15.00
1.00000 0.00000 0.00000
0.00000 1.00000 0.00000
0.00000 0.00000 1.00000
1
Direct
0 0 0

KPOINTS
Automatic generation
0
Gamma
1 1 1
0 0 0
赝势选择potpaw -Al
结果是这样,完全不符合在0.001-0.01eV之间的标准,该怎么办?
energy without entropy =        2.33005116  energy(sigma->0) =        2.30068496
energy without entropy =        0.06876204  energy(sigma->0) =        0.01798658
energy without entropy =        0.00040029  energy(sigma->0) =       -0.05260055
energy without entropy =       -0.00057073  energy(sigma->0) =       -0.05357212
energy without entropy =       -0.00057079  energy(sigma->0) =       -0.05357218
energy without entropy =       -0.00054478  energy(sigma->0) =       -0.05354616

还有,谁能告诉我为什么poscar要写这样子?谢谢
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