Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 19: Cluster I (joint session A/MO)
A 19.4: Vortrag
Mittwoch, 13. März 2019, 15:15–15:30, S HS 3 Physik
Plasmon resonances of polyanionic metal clusters — •Klara Raspe1, Norman Iwe1, Madlen Müller2, Franklin Martinez1, Josef Tiggesbäumker1, Lutz Schweikhard2, and Karl-Heinz Meiwes-Broer1 — 1Institut für Physik, Universität Rostock, Albert-Einstein-Str. 23-24, 18059 Rostock — 2Institut für Physik, Universität Greifswald, Felix-Hausdorff-Str. 6, 17489 Greifswald
In the interaction of metal clusters with light the occurrence of plasmon resonances is a well known effect. We present photoelectron spectra of negatively charged silver clusters which indicate such a plasmon resonance, and - in the case of higher charge states - show also the Coulomb Cut-Off. In this contribution we discuss the plasmon energies with respect to well-defined cluster sizes and charge states and compare them to literature values of smaller silver clusters. The project has been supported by the collaborative research center SFB 652 of the DFG.