Journal Article

PreJuSER-49088

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Correlation-Induced Double-Plasmon Excitation in Simple Metals Studied by Inelastic X-Ray Scattering

Sternemann, C. ; Huotari, S. ; Vanko, G. ; Volmer, M. ; Monaco, G. ; Gusarov, A. ; Lustfeld, H.FZJ* ; Sturm, K.FZJ* ; Schuelke, W.

2005
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/1429  doi:10.1103/PhysRevLett.95.157401

Abstract: We report a new type of peaklike structure observed in the tail of the dynamic structure factor of simple metals, measured by inelastic x-ray scattering. Based on the momentum-transfer dependence of the energy position and the intensity of this structure, it has been unambiguously attributed to intrinsic plasmon-plasmon excitations, an electronic correlation effect that was theoretically predicted by many-body perturbation theory of the homogeneous-electron-gas model beyond the random-phase approximation. This signature appears to be largely unaffected by electron-ion interaction effects. Thus a structure that is primarily caused by correlation effects in the electron gas has been found experimentally in the dynamic structure factor of simple metals.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Theorie I (IFF-TH-I)

Research Program(s):

1. Kondensierte Materie (M02)

Appears in the scientific report 2005
Notes: This version is available at the following Publisher URL: http://prl.aps.org

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