Phys. Rev. B 81, 024430 (2010) [9 pages]Noncollinear spin-spiral phase for the uniform electron gas within reduced-density-matrix-functional theoryReceived 2 October 2009; published 29 January 2010 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. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.81.024430
DOI:
10.1103/PhysRevB.81.024430
PACS:
71.10.Ca, 71.15.-m, 73.22.Gk, 75.30.Fv
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