On-Top Pair-Density Interpretation of Spin Density Functional Theory, with Applications to Magnetism
On-Top Pair-Density Interpretation of Spin Density Functional Theory, with Applications to Magnetism
复制标题
自旋密度泛函理论的顶对密度解释及其在磁学中的应用
DOI:
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发表时间:
1997
期刊:
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通讯作者:
A. Savin
中科院分区:
文献类型:
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作者:
J. Perdew;M. Ernzerhof;K. Burke;A. Savin
The on-top pair density P r, r gives the probability that one electron will be found on top . of another at position r. We find that the local spin density LSD and generalized . gradient GGA approximations for exchange and correlation predict this quantity with remarkable accuracy. We show how this fact and the usual sum-rule arguments explain the success of these approximations for real atoms, molecules, and solids, where the electron spin densities do not vary slowly over space. Self-consistent LSD or GGA . calculations make realistic predictions for the total energy E, the total density n r , and .