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1051358187金蟲 (小有名氣)
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[求助]
VASP計算能量不相等的問題
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FREE ENERGIE OF THE ION-ELECTRON SYSTEM (eV) --------------------------------------------------- free energy TOTEN = -306.82473030 eV energy without entropy= -306.82473030 energy(sigma->0) = -306.82473030 d Force = 0.6058036E-04[ 0.309E-04, 0.903E-04] d Energy = 0.1035490E-03-0.430E-04 d Force =-0.1332954E+00[-0.133E+00,-0.133E+00] d Ewald = 0.4306897E+00-0.564E+00 做初步優(yōu)化,最后reached required accuracy - stopping structural energy minimisation,沒有設置溫度什么參數(shù),所以上面的free energy TOTEN = energy without entropy= energy(sigma->0) = -306.82473030 但是同樣的輸入文件我就替換了一個過渡金屬 也出現(xiàn)reached required accuracy - stopping structural energy minimisation,但是結果卻是這樣 FREE ENERGIE OF THE ION-ELECTRON SYSTEM (eV) --------------------------------------------------- free energy TOTEN = -288.78125169 eV energy without entropy= -288.55900164 energy(sigma->0) = -288.67012667 d Force = 0.3750536E-04[ 0.284E-04, 0.466E-04] d Energy = 0.4720456E-04-0.970E-05 d Force = 0.8242712E-02[ 0.818E-02, 0.830E-02] d Ewald =-0.3965413E+00 0.405E+00 就是他們都不相等了,這說明什么呢,這個新的結構很不穩(wěn)定嗎,謝謝 |

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