Dresden 2011 – wissenschaftliches Programm

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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 60.69: Poster

Mittwoch, 16. März 2011, 17:30–21:00, P4

Calculation of the Equilibrium Electron Density of Plasmonic Nanostructures — •Timo Köllner, Kurt Busch, and Jens Niegemann — Institut für Theoretische Festkörperphysik and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany

The hydrodynamic description of plasmonic devices allows the modeling of the nonlocal and nonlinear response of such structures to optical excitation. However, in order to properly conduct numerical calculations of the full hydrodynamic model, one first needs to find the equilibrium electron density of the system. In particular, the behaviour of the density at the surface of a metallic object is suspected to have a significant influence.

Here, we present an efficient and accurate finite-element approach to calculate the equilibrium electron density distribution and the electrostatic fields at the edge of the positively charged jellium background.