Optimized effective potential method with exact exchange and static RPA correlation

Details Optimized effective potential method with exact exchange and static RPA correlation Optimized effective potential method with exact exchange and static RPA correlation

1997-11-07

arxiv.org/abs/cond-mat/9711062v1

Physics

Condensed Matter

Statistical Mechanics

12pages. 4 figures

Scientific paper

10.1016/S0304-8853(97)00441-1

We present a new density-functional method of the self-consistent electronic-structure calculation which does not exploit any local density approximations (LDA). We use the exchange-correlation energy which consists of the exact exchange and the correlation energies in the random-phase approximation. The functional derivative of the correlation energy with respect to the density is obtained within a static approximation. For transition metals, it is shown that the correlation potential gives rise to a large contribution which has the opposite sign to the exchange potential. Resulting eigenvalue dispersions and the magnetic moments are very close to those of LDA's and the experiments.

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