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arXiv · 0910.0534

Non-collinear spin-spiral phase for the uniform electron gas within Reduced-Density-Matrix-Functional Theory

F. G. Eich·S. Kurth·C. R. Proetto·S. Sharma·E. K. U. Gross
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Abstract

The non-collinear spin-spiral density wave of the uniform electron gas is studied in the framework of Reduced-Density-Matrix-Functional Theory. For the Hartree-Fock approximation, which can be obtained as a limiting case of Reduced-Density-Matrix-Functional Theory, Overhauser showed a long time ago that the paramagnetic state of the electron gas is unstable with respect to the formation of charge or spin density waves. Here we not only present a detailed numerical investigation of the spin-spiral density wave in the Hartree-Fock approximation but also investigate the effects of correlations on the spin-spiral density wave instability by means of a recently proposed density-matrix functional.

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F. G. Eich, S. Kurth, C. R. Proetto, S. Sharma, E. K. U. Gross. 2009-10-03. Non-collinear spin-spiral phase for the uniform electron gas within Reduced-Density-Matrix-Functional Theory. https://doi.org/10.1103/physrevb.81.024430

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