Berlin 2008 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 18: Poster Session I - MA 141/144 (Atomic Wires; Size-Selected Clusters; Nanostructures; Metal Substrates: Clean Surfaces+Adsorption of Organic / Bio Molecules+Solid-Liquid Interfaces+Adsorption of O and/or H; Surface or Interface Magnetism; Oxides and Insulators: Clean Surfaces)

O 18.10: Poster

Montag, 25. Februar 2008, 18:30–19:30, Poster F

Calculations of two-particle correlation functions at surfaces — •Yaroslav Pavlyukh and Jamal Berakdar — Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Heinrich-Damerow-Str. 4, 06120 Halle

The spectra of the electron-induced electron pair from surfaces [1] carry information on the short-range charge and spin correlations.

We show in this contribution how the measured angular and energy correlation within the electron pair relates to the spin-resolved spectral density of the sample and the screened Coulomb interaction. Both quantities we inspect theoretically by means of a combination of many-body theory and quantum chemistry methods based on the configuration interaction.

[1] Schumann et al., Physical Review Letters 95, 117601 (2005)