Self-interaction correction in multiple scattering theory

Details Self-interaction correction in multiple scattering theory Self-interaction correction in multiple scattering theory

2004-06-22

arxiv.org/abs/cond-mat/0406515v3

Phys. Rev. B 71, 205109 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

17 pages, 17 figures, 4 tables, replaced by published version

Scientific paper

10.1103/PhysRevB.71.205109

We propose a simplified version of self-interaction corrected local spin-density (SIC-LSD) approximation, based on multiple scattering theory, which implements self-interaction correction locally, within the KKR method. The multiple scattering aspect of this new SIC-LSD method allows for the description of crystal potentials which vary from site to site in a random fashion and the calculation of physical quantities averaged over ensembles of such potentials using the coherent potential approximation (CPA). This facilitates applications of the SIC to alloys and pseudoalloys which could describe disordered local moment systems, as well as intermediate valences. As a demonstration of the method, we study the well-known $\alpha$-$\gamma$ phase transition in Ce, where we also explain how SIC operates in terms of multiple scattering theory.

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