Document Type

Article

Publication Date

4-7-2004

Abstract

We calculate the Hartree-Fock energy of a density-wave state in a spin-polarized two-dimensional electron system with short-range repulsive interactions. We find that the ground state is always either normal (nonmagnetic) or ferromagnetic. However, the energy of a density-wave state approaches the energy of the ferromagnetic ground state by a factor proportional to (1 - ζ2) (ζ is the polarization of the electron gas). Based on this result, we comment on the possible existence of a density-wave ground state when a more realistic interaction that includes electron correlations is considered.

Publication Source (Journal or Book title)

Journal of Physics Condensed Matter

First Page

2311

Last Page

2316

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