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Deutsche Tagung f ¨ur Forschung mit ... - SNI-Portal

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Methoden und Instrumentierung Poster: Mi., 14:00–16:30 M-P51<br />

Angle Resolved Photoemission Spectroscopy at VUV-FEL<br />

Martin Marczynski 1 , Matthias Kallaene 1 , Tim Riedel 1 , Sönke Harm 1 , Kai<br />

Rossnagel 1 , Lutz Kipp 1<br />

1 Institut für Experimentelle und Angewandte Physik, Universität Kiel, D-24098, Ger-<br />

many<br />

Free Electron Lasers (FELs) are new kinds of light sources that can generate very brilliant<br />

ultrashort and coherent photon pulses. Employing 38 eV FEL radiation delivered<br />

by the VUV-FEL beamline PG2 at HASYLAB we performed angle resolved photoemission<br />

spectroscopy (ARPES) measurements on layered crystals. Electronic structure<br />

and space charge effects were investigated as a function of FEL pulse intensity.<br />

ARPES spectra were taken on a single shot basis using a hemispherical analyzer with<br />

a multichannel detector capable of detecting energy and angle of the photoelectrons in<br />

parallel.<br />

This work is supported by Innovationsfond des Landes Schleswig- Holstein.

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