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Title: Character of tightly bound excitons in small argon clusters: Insights from size-dependent energy shifts.
Authors: Laarmann, Tim
von Haeften, Klaus
Kanaev, A.V.
Wabnitz, Hubertus
Möller, Thomas
First Published: 2002
Publisher: American Physical Society
Citation: Physical Review B, 2002, 66, pp 205407-1 - 205407-7.
Abstract: The structure of the first electronically excited states of small Ar M clusters (M <=100) embedded in large NeN (N=57500) clusters is investigated using fluorescence excitation spectroscopy. In the energy range of the characteristic absorption of Ar clusters (11.5–12.9 eV), surface excitons of Ar clusters embedded in Ne disappear, while additional absorption bands appear. They are assigned to excitons at the interface between the Ar cluster and the Ne host cluster. The observed energy shift of all absorption bands is proportional to the logarithm of the cluster radius. This can be understood in the Frenkel-exciton model, taking the resonant excitation transfer into account.
Type: Article
Description: This is the version as published by American Physical Society and available at their website
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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