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- W2040032645 abstract "The comparison between three classical potentials and density functional theory (DFT) is performed mainly for divacancy and hexavacancy in Si crystal. According to their performances on the formation energies and structural properties (distortion magnitude, relaxation volume and symmetry), the limitations and validities of classical potentials are discussed. It is found that the outward relaxation directions of EDIP and Tersoff (T3) are contrary to the DFT and Stillinger–Weber (SW) directions (inward), which restrict their application in the structural property calculations. Except for the divacancy symmetries, the results of SW are in agreement with the DFT results. Thus, it can be concluded that SW should be the best potential to describe V 2 and V 6 . ► The comparison between SW, Tersoff (T3), EDIP and DFT is performed for divacancy and hexavacancy. ► The limitations and validities of the three classical potentials are discussed. ► It is found that SW should be the best potential to describe V 2 and V 6 ." @default.
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- W2040032645 date "2011-02-01" @default.
- W2040032645 modified "2023-09-28" @default.
- W2040032645 title "Comparative study of the empirical interatomic potentials and density-functional simulations of divacancy and hexavacancy in silicon" @default.
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- W2040032645 doi "https://doi.org/10.1016/j.physb.2010.11.014" @default.
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