Lifetime of the first and second collective excitations in metallic nanoparticles

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dc.creatorWeick, Guillaume
dc.creatorMolina, Rafael A.
dc.creatorWeinmann, Dietmar
dc.creatorJalabert, Rodolfo A.
dc.date2005-06-14
dc.date2005-09-12
dc.date.accessioned2026-07-07T03:05:36Z
dc.date.available2026-07-07T03:05:36Z
dc.descriptionWe determine the lifetime of the surface plasmon in metallic nanoparticles under various conditions, concentrating on the Landau damping, which is the dominant mechanism for intermediate-size particles. Besides the main contribution to the lifetime, which smoothly increases with the size of the particle, our semiclassical evaluation yields an additional oscillating component. For the case of noble metal particles embedded in a dielectric medium, it is crucial to consider the details of the electronic confinement; we show that in this case the lifetime is determined by the shape of the self-consistent potential near the surface. Strong enough perturbations may lead to the second collective excitation of the electronic system. We study its lifetime, which is limited by two decay channels: Landau damping and ionization. We determine the size dependence of both contributions and show that the second collective excitation remains as a well defined resonance.
dc.description18 pages, 5 figures; few minor changes
dc.identifierhttps://arxiv.org/abs/cond-mat/0506320
dc.identifierhttp://arxiv.org/abs/cond-mat/0506320
dc.identifierPhysical Review B 72 (2005) 115410
dc.identifierdoi:10.1103/PhysRevB.72.115410
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26505
dc.subjectMesoscale and Nanoscale Physics
dc.titleLifetime of the first and second collective excitations in metallic nanoparticles
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