Spatial Correlation of Conduction Electrons in Metal with Complicated Geometry Of The Fermi Surface

Details Spatial Correlation of Conduction Electrons in Metal with Complicated Geometry Of The Fermi Surface Spatial Correlation of Conduction Electrons in Metal with Complicated Geometry Of The Fermi Surface

1992-12-25

arxiv.org/abs/cond-mat/9212032v1

J.Phys.Condens.Matter 5 (1993) 1481-1492

Physics

Condensed Matter

12 pages, LaTeX, 5 figures upon request (to appear in J.Phys.:CM, 1993)

Scientific paper

10.1088/0953-8984/5/10/006

The "density-density" correlation function of conduction electrons in metal is investigated. It is shown, that the asymptotic behaviour of the CF depends on the shape and the local geometry of the Fermi surface. In particular, the exponent of power law which describes the damping of Friedel oscillations at large r (-4 for an isotropic Fermi gas) is determined by local geometry of the FS. The applications of the obtained results to calculations of the CF in a metal near the electron topological transition and of the RKKY exchange integral are considered as well.

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