Regensburg 2016 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 69: Nanostructures at Surfaces: Dots, Particles, Clusters

O 69.1: Poster

Mittwoch, 9. März 2016, 18:15–20:30, Poster A

Plasmon-Enhanced Photoemission from Individual Silver Nanoparticles — •Kevin Oldenburg, Hannes Hartmann, Karl-Heinz Meiwes-Broer, Ingo Barke, and Sylvia Speller — University of Rostock, Institute of Physics, 18059 Rostock, Germany

The plasmonic response of metal nanostructures not only depends on material and shape but also on coupling phenomena to the environment. By optical excitation close to the resonance wavelength efficient electron emission can be triggered which is accessible using photoemission electron microscopy (PEEM)[1]. Here we study photoemission from individual silver particles produced in the gas phase and soft-landed onto silicon substrates. The electron emission is correlated to geometric properties obtained by atomic force microscopy (AFM) and discussed regarding particle size and cluster-surface interaction.

[1] M. Rohmer et al., Phys. Stat. Sol. B 247, 1132 (2010).