Coupling of Surface and Volume Dipole Oscillations in C-60 Molecules

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dc.creatorBrack, M.
dc.creatorWinkler, P.
dc.creatorMurthy, M. V. N.
dc.date2007-10-15
dc.date.accessioned2026-07-07T11:38:06Z
dc.date.available2026-07-07T11:38:06Z
dc.descriptionWe first give a short review of the ``local-current approximation'' (LCA), derived from a general variation principle, which serves as a semiclassical description of strongly collective excitations in finite fermion systems starting from their quantum-mechanical mean-field ground state. We illustrate it for the example of coupled translational and compressional dipole excitations in metal clusters. We then discuss collective electronic dipole excitations in C$_{60}$ molecules (Buckminster fullerenes). We show that the coupling of the pure translational mode (``surface plasmon'') with compressional volume modes in the semiclasscial LCA yields semi-quantitative agreement with microscopic time-dependent density functional (TDLDA) calculations, while both theories yield qualitative agreement with the recent experimental observation of a ``volume plasmon''.
dc.descriptionLaTeX, 12 pages, 5 figures (8 *.eps files); Contribution to XIV-th Nuclear Physics Workshop at Kazimierz Dolny, Poland, Sept. 26-29, 2007
dc.identifierhttps://arxiv.org/abs/0710.2749
dc.identifierhttp://arxiv.org/abs/0710.2749
dc.identifierInt.J.Mod.Phys.E17:138-150,2008
dc.identifierdoi:10.1142/S021830130800963X
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199443
dc.subjectAtomic and Molecular Clusters
dc.subjectNuclear Theory
dc.subjectAtomic Physics
dc.subjectFluid Dynamics
dc.titleCoupling of Surface and Volume Dipole Oscillations in C-60 Molecules
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