Spin-density functional approach to thermodynamic and structural consistence in the charge and spin response of an electron gas

Details Spin-density functional approach to thermodynamic and structural consistence in the charge and spin response of an electron gas Spin-density functional approach to thermodynamic and structural consistence in the charge and spin response of an electron gas

2002-09-03

arxiv.org/abs/cond-mat/0209059v2

Solid State Communications 124, 335 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 3 figures, submitted to Solid State Commun

Scientific paper

10.1016/S0038-1098(02)00498-2

We use spin-density functional theory to obtain novel expressions for the charge and spin local-field factors of an electron gas in terms of its electron-pair structure factors. These expressions (i) satisfy the compressibility and spin susceptibility sum rules; (ii) keep account of kinetic correlations by means of an integration over the coupling strength; and (iii) provide a practical self-consistent scheme for evaluating linear response and liquid structure. Numerical illustrations are given for the dielectric response of the paramagnetic electron gas in both three and two dimensions.

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