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@ARTICLE{Huotari:532,
      author       = {Huotari, S. and Sternemann, C. and Schülke, W. and Sturm,
                      K. and Lustfeld, H. and Sternemann, H. and Volmer, M. and
                      Gusarov, A. and Müller, H. and Monaco, G.},
      title        = {{E}lectron-density dependence of double-plasmon excitations
                      in simple metals},
      journal      = {Physical review / B},
      volume       = {77},
      number       = {19},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-532},
      pages        = {195125},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Double plasmons are unique fingerprints of dynamical
                      correlations in the model of a free-electron gas beyond the
                      random phase approximation. A combined experimental and
                      theoretical study of double-plasmon excitations in three
                      simple metals Na, Mg, and Al is presented. The intensities,
                      spectral shapes, and dispersions of these excitations are
                      analyzed as a function of momentum. The measured
                      double-plasmon intensity is found to increase with a
                      decreasing electron density, which is in good agreement with
                      the expectations of strength of the correlation effects as a
                      function of the electron gas density. The overall
                      quantitative agreement between the experimental and the
                      theoretical results is very good, while the remaining
                      discrepancies may be due to higher order correlation effects
                      and band-structure effects.},
      keywords     = {J (WoSType)},
      cin          = {IFF-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB781},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000256971600061},
      doi          = {10.1103/PhysRevB.77.195125},
      url          = {https://juser.fz-juelich.de/record/532},
}