Formation of collective excitations in quasi-one dimensional metallic nanostructures: size and density dependance

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dc.creatorCassidy, Amy
dc.creatorGrigorenko, Ilya
dc.creatorHaas, Stephan
dc.date2008-04-16
dc.date.accessioned2026-07-07T09:32:57Z
dc.date.available2026-07-07T09:32:57Z
dc.descriptionWe investigate theoretically the formation of collective excitations in atomic scale quasi-one dimensional metallic nanostructures. The response of the system is calculated within the linear response theory and random phase approximation. For uniform nanostructures a transition from quantum single particle excitations to classical plasmon scaling is observed, depending on the system length and electron density. We find crucial differences in the scaling behavior for quasi-one dimensional and three-dimensional nanostructures. The presence of an additional modulating on-site potential is shown to localize electrons, leading to the response function that is highly sensitive to the number of electrons at low fillings.
dc.descriptionsubmitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/0804.2625
dc.identifierhttp://arxiv.org/abs/0804.2625
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158967
dc.subjectMesoscale and Nanoscale Physics
dc.titleFormation of collective excitations in quasi-one dimensional metallic nanostructures: size and density dependance
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