Noncollinear 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 noncollinear 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.

Original languageEnglish
Article number024430
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number2
DOIs
StatePublished - 29 Jan 2010
Externally publishedYes

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