Infrared electron modes in light deformed clusters

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dc.creatorNesterenko, V. O.
dc.creatorReinhard, P. -G.
dc.creatorKleinig, W.
dc.creatorDolci, D. S.
dc.date2004-05-03
dc.date.accessioned2026-07-07T12:37:45Z
dc.date.available2026-07-07T12:37:45Z
dc.descriptionInfrared quadrupole modes (IRQM) of the valence electrons in light deformed sodium clusters are studied by means of the time-dependent local-density approximation (TDLDA). IRQM are classified by angular momentum components $λμ=$20, 21 and 22 whose $μ$ branches are separated by cluster deformation. In light clusters with a low spectral density, IRQM are unambiguously related to specific electron-hole excitations, thus giving access to the single-electron spectrum near the Fermi surface (HOMO-LUMO region). Most of IRQM are determined by cluster deformation and so can serve as a sensitive probe of the deformation effects in the mean field. The IRQM branch $λμ=$21 is coupled with the magnetic scissors mode, which gives a chance to detect the latter. We discuss two-photon processes, Raman scattering (RS), stimulated emission pumping (SEP), and stimulated adiabatic Raman passage (STIRAP), as the relevant tools to observe IRQM. A new method to detect the IRQM population in clusters is proposed.
dc.description22 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/physics/0405004
dc.identifierhttp://arxiv.org/abs/physics/0405004
dc.identifierPhys.Rev.A70:023205,2004
dc.identifierdoi:10.1103/PhysRevA.70.023205
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218550
dc.subjectAtomic and Molecular Clusters
dc.subjectOptics
dc.titleInfrared electron modes in light deformed clusters
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