Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Density-functional approximation for the correlation energy of the inhomogeneous electron gas

Density-functional approximation for the correlation energy of the inhomogeneous electron gas Langreth and Mehl (LM) and co-workers have developed a useful spin-density functional for the correlation energy of an electronic system. Here the LM functional is improved in two ways: (1) The natural separation between exchange and correlation is made, so that the density-gradient expansion of each is recovered in the slowly varying limit. (2) Uniform-gas and inhomogeneity effects beyond the randomphase approximation are built in. Numerical results for atoms, positive ions, and surfaces are close to the exact correlation energies, with major improvements over the original LM approximation for the ions and surfaces. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Density-functional approximation for the correlation energy of the inhomogeneous electron gas

Physical Review B , Volume 33 (12) – Jun 15, 1986
3 pages

Loading next page...
 
/lp/american-physical-society-aps/density-functional-approximation-for-the-correlation-energy-of-the-UgsaoAXxhd

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Physical Society (APS)
Copyright
Copyright © 1986 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.33.8822
Publisher site
See Article on Publisher Site

Abstract

Langreth and Mehl (LM) and co-workers have developed a useful spin-density functional for the correlation energy of an electronic system. Here the LM functional is improved in two ways: (1) The natural separation between exchange and correlation is made, so that the density-gradient expansion of each is recovered in the slowly varying limit. (2) Uniform-gas and inhomogeneity effects beyond the randomphase approximation are built in. Numerical results for atoms, positive ions, and surfaces are close to the exact correlation energies, with major improvements over the original LM approximation for the ions and surfaces.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jun 15, 1986

There are no references for this article.