Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-10-03
Physics
Condensed Matter
Strongly Correlated Electrons
9 pages, 10 figures
Scientific paper
10.1103/PhysRevB.81.024430
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.
Eich F. G.
Gross Eberhard K. U.
Kurth Stefan
Proetto Cesar R.
Sharma Sanjeev
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