Correlation-induced double-plasmon excitation in simple metals studied by inelastic X-ray scattering

C. Sternemann, S. Huotari, G. Vankó, M. Volmer, G. Monaco, A. Gusarov, H. Lustfeld, K. Sturm, W. Schülke

Research output: Contribution to journalArticle

20 Citations (Scopus)

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.

Original languageEnglish
Article number157401
JournalPhysical Review Letters
Volume95
Issue number15
DOIs
Publication statusPublished - Oct 7 2005

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electron gas
scattering
metals
excitation
x rays
x ray scattering
momentum transfer
inelastic scattering
perturbation theory
signatures
approximation
electronics
ions
electrons
interactions
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Correlation-induced double-plasmon excitation in simple metals studied by inelastic X-ray scattering. / Sternemann, C.; Huotari, S.; Vankó, G.; Volmer, M.; Monaco, G.; Gusarov, A.; Lustfeld, H.; Sturm, K.; Schülke, W.

In: Physical Review Letters, Vol. 95, No. 15, 157401, 07.10.2005.

Research output: Contribution to journalArticle

Sternemann, C, Huotari, S, Vankó, G, Volmer, M, Monaco, G, Gusarov, A, Lustfeld, H, Sturm, K & Schülke, W 2005, 'Correlation-induced double-plasmon excitation in simple metals studied by inelastic X-ray scattering', Physical Review Letters, vol. 95, no. 15, 157401. https://doi.org/10.1103/PhysRevLett.95.157401
Sternemann, C. ; Huotari, S. ; Vankó, G. ; Volmer, M. ; Monaco, G. ; Gusarov, A. ; Lustfeld, H. ; Sturm, K. ; Schülke, W. / Correlation-induced double-plasmon excitation in simple metals studied by inelastic X-ray scattering. In: Physical Review Letters. 2005 ; Vol. 95, No. 15.
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