Volume 63, Number 5, September 2003
|Page(s)||660 - 666|
|Published online||01 November 2003|
Structure of the local-field factor of the 2D electron fluid. Possible evidence for correlated scattering of electron pairs
Institute of Microstructural Sciences, National Research Council of Canada Ottawa, Canada, K1A 0R6
Corresponding author: email@example.com
Accepted: 30 June 2003
The static local-field factor (LFF) of the 2D electron fluid is calculated nonperturbatively using a mapping to a classical Coulomb fluid (Phys. Rev. Lett., 87 (2001) 206404). The LFF for the paramagnetic fluid differs markedly from perturbation theory where a peak near is expected. Our LFF has a quasi-linear small-k region leading to a peak close to , in agreement with available quantum Monte Carlo data. The structure in the LFF and its dependence on the density and temperature are interpreted as a signature of correlated scattering of electron pairs of opposite spin. The lack of structure at implies weakened Friedel oscillations, Kohn anomalies, etc.
PACS: 05.30.Fk – Fermion systems and electron gas / 71.10.-w – Theories and models of many-electron systems / 71.45.Gm – Exchange, correlation, dielectric and magnetic response functions, plasmons
© EDP Sciences, 2003
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