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O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.66: Poster
Mittwoch, 16. März 2011, 17:30–21:00, P4
Quantum-size effects on the dielectric response of metal clusters — •Koray Koksal1,2, Yaroslav Pavlyukh2, and Jamal Berakdar2 — 1Physics Department, BitlisEren University, Bitlis, 13000, Turkey — 2Institüt für Physik, Martin-Luther-Universitat Halle-Wittenberg, Heinrich-Damerow-Strasse 4, 06120 Halle, Germany
We present analytical and numerical techniques and calculations for the quantum, dielectric response of metal clusters and elucidate the dependencies on the clusters size and topology. The calculations have been performed for Al, Ag and Cu clusters. We will discuss possible ways for the experimental verification on the basis of scanning tunneling spectroscopy [1] and electron energy loss spectroscopy [2] and also point out the relevance to nano-plasmonics.
[1] L. Limot, E. Pehlke, J. Kröger, and R. Berndt, Phys. Rev. Lett. 94, 036805 (2005)
[2] J. W. L. Eccles, U. Bangert, M. Bromfield, P. Christian, A. J. Harvey and P. Thomas, J. Phys.: Conf. Ser. 241, 012090 (2010)