Interface-induced dephasing of Mie plasmon polaritons |
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Authors: | U Kreibig |
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Institution: | (1) Physikalisches Institut 1A der RWTH Aachen, Aachen, Germany |
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Abstract: | Surface and, in particular, interface effects influence all physical and chemical properties of nanostructured matter. Mie
surface plasmon polaritons (MPPs) in metallic nanoparticles are excellent and sensitive sensors for optical investigation
of these effects of realistic particles since their lifetimes due to dephasing (decoherence) effects and their resonance energies
drastically depend upon the chemistry and topology of their surfaces/interfaces. A survey is given over some results of our
own long term research on MPPs which started, in fact, as early as 1969. Theoretical models and experiments concerning the
A parameter, the δ
n parameter, MPP phase decoherence and static and dynamic interface charge transfer effects (“chemical interface damping”)
are briefly summarized. The effect of radiation damping is disregarded throughout: we assume the particle sizes to be small
enough to justify this simplification, which makes it easier to draw conclusions from the MPPs on nanomaterial properties.
Obviously, there is a wide field for future research concerning particle interfaces on the basis of Mie’s theory. On the other
hand, all of these effects have to be incorporated into Mie’s theory to obtain a “modern” version which is reliable on a quantitative
level to describe experimental data. |
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Keywords: | PACS" target="_blank">PACS 61 46 Df 71 45 Gm 72 10 Gm 73 20 -r 73 22 -b 73 40 Ns 78 67 -n |
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