title: Plasmons in supported size-selected silver nanoclusters.
abstract: The plasmonic behavior of size-selected supported silver clusters is studied by surface second harmonic generation spectroscopy for the first time. A blue shift of ∼0.2 eV in the plasmon resonance is observed with decreasing cluster size from Ag55 to Ag9. In addition to the general blue shift, a nonscalable size-dependence is also observed in plasmonic behavior of Ag nanoclusters, which is attributed to varying structural properties of the clusters. The results are in quantitative agreement with a hybrid theoretical model based on Mie theory and the existing DFT calculations.
authors.affiliation: Technische Universität München, Department of Physical Chemistry, Catalysis Research Center, Lichtenbergstr. 4, 85748 Garching, Germany. aras.kartouzian@mytum.de.
authors.forename: Tobias
authors.initials: T
authors.lastname: Lünskens
authors.forename: Philipp
authors.initials: P
authors.lastname: Heister
authors.forename: Martin
authors.initials: M
authors.lastname: Thämer
authors.forename: Constantin A
authors.initials: CA
authors.lastname: Walenta
authors.forename: Aras
authors.initials: A
authors.lastname: Kartouzian
authors.forename: Ulrich
authors.initials: U
authors.lastname: Heiz