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
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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
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通讯作者:
A. Savin
A. Savin
中科院分区:
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作者:
J. Perdew;M. Ernzerhof;K. Burke;A. Savin

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顶部电子对密度Pr,r给出了在顶部发现一个电子的概率。另一个在位置r。我们发现,局域自旋密度LSD和推广。梯度GGA近似的交换和相关预测这个数量具有显着的准确性。我们展示了这个事实和通常的求和规则参数如何解释这些近似对于真实的原子、分子和固体的成功,在这些原子、分子和固体中,电子自旋密度在空间上变化并不缓慢。自我一致的LSD或GGA。计算对总能量E、总密度nr和。
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 .