Book/Dissertation / PhD Thesis

FZJ-2024-04612

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Advances in Photoemission Orbital Tomography

Haags, A. (Corresponding author)FZJ*

2024
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich
ISBN: 978-3-95806-766-0

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Please use a persistent id in citations: urn:nbn:de:0001-20240724091805126-5353403-6  doi:10.34734/FZJ-2024-04612

Abstract: Photoemission orbital tomography (POT) is an established technique to investigate the electronic properties of organic adsorbates on surfaces. In POT, a combined experimental and theoretical approach, angle-resolved photoelectron spectroscopy data are measured in a large angular range at a constant kinetic energy and compared to calculated wave functions of organic molecules. To simulate the photoemission process, the final state of the photoelectrons is approximated by a plane wave (PW). Then, the experimentally-obtained photoemission intensity distribution can be correlated directly to theoretical density of states to identify individual orbitals. Due to the used PW approximation (PWA), POT is commonly restricted to π orbitals of large, planar molecules, and a particular experimental geometry. Yet, some reports in literature suggest that POT is not fixed to these conditions. In this work, we verify the limits of POT and thus extend its potential.

Note: Dissertation, RWTH Aachen University, 2024

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Contributing Institute(s):

1. Quantum Nanoscience (PGI-3)

Research Program(s):

1. 5213 - Quantum Nanoscience (POF4-521) (POF4-521)

Appears in the scientific report 2024

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