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tonglijia木蟲 (正式寫手)
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[求助]
castep中能量計(jì)算輸出文件*。castep中幾個(gè)能量的區(qū)別
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Therefore, CASTEP uses the Mermin finite temperature expression for the total energy (Marzari, 1997): E = EKS - TS, where T is the temperature (i.e., smearing width) and S is the Mermin entropy due to the different ways in which the partially filled bands could have been filled. The CASTEP output is as follows. The line Final energy, E = -861.8315373731 eV gives the Kohn-Sham energy, EKS, which ignores the entropy. However, it is the total Mermin free energy that is minimized by CASTEP and reported in the SCF cycles in the line Final free energy (E-TS) = -861.8315374521 eV If you were actually interested in the electronic states at some reasonable nonzero temperature, you would smear the Fermi level with a thermal (i.e., Fermi-Dirac) smearing method and the free energy reported by CASTEP would be the value you require. 中Final energy, E和Final free energy (E-TS),以及Pseudo atomic calculation performed for Fe 3d6 4s2 Converged in 37 iterations to a total energy of -855.8641 eV的區(qū)別 |
計(jì)算MS等 |

木蟲 (正式寫手)

木蟲 (正式寫手)

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