Correlation effects and the high-frequency spin susceptibility of an electron liquid: Exact limits

Atwal, G. S., Ashcroft, N. W. (2003) Correlation effects and the high-frequency spin susceptibility of an electron liquid: Exact limits. Physical review B. Condensed matter and materials physics, 67 (23). 233104-233104.4. ISSN 1098-0121

URL: http://journals.aps.org/prb/abstract/10.1103/PhysR...
DOI: 10.1103/PhysRevB.67.233104

Abstract

Spin correlations in an interacting electron liquid are studied in the high-frequency limit and in both two and three dimensions. The third-moment sum rule is evaluated and is used to derive exact limiting forms (at both long and short wavelengths) for the spin-antisymmetric local-field factor, limω→∞G-(q,ω). In two dimensions limω→∞G-(q,ω) is found to diverge as 1/q at long wavelengths, and the spin-antisymmetric exchange-correlation kernel of time-dependent spin density functional theory diverges as 1/q2 in both two and three dimensions. These signal a failure of the local-density approximation, one that can be redressed by alternative approaches.

Item Type: Paper
Subjects: physics > biophysics
physics
structural biology
CSHL Authors:
Communities: CSHL labs > Atwal lab
Depositing User: Matt Covey
Date Deposited: 08 Jul 2013 20:38
Last Modified: 19 Dec 2016 20:58
URI: http://repository.cshl.edu/id/eprint/27845

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