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@ARTICLE{Kern:1044387,
author = {Kern, Christian S. and Yang, Xiaosheng and Zamborlini,
Giovanni and Mearini, Simone and Jugovac, Matteo and Feyer,
Vitaliy and De Giovannini, Umberto and Rubio, Angel and
Soubatch, Serguei and Ramsey, Michael G. and Tautz, F.
Stefan and Puschnig, Peter},
title = {{C}ircular dichroism in the photoelectron angular
distribution of achiral molecules},
publisher = {arXiv},
reportid = {FZJ-2025-03158},
year = {2025},
abstract = {Circular dichroism in the angular distribution (CDAD) is
the effect that the angular intensity distribution of
photoemitted electrons depends on the handedness of the
incident circularly polarized light. A CDAD may arise from
intrinsic material properties like chirality, spin-orbit
interaction, or quantum-geometrical effects on the
electronic structure. In addition, CDAD has also been
reported for achiral organic molecules at the interface to
metallic substrates. For this latter case, we investigate
two prototypical $π$-conjugated molecules, namely tetracene
and pentacene, whose frontier orbitals have a similar shape
but exhibit distinctly different symmetries. By comparing
experimental CDAD momentum maps with simulations within
time-dependent density functional theory, we show how the
final state of the photoelectron must be regarded as the
source of the CDAD in such otherwise achiral systems. We
gain additional insight into the mechanism by employing a
simple scattering model for the final state, which allows us
to decompose the CDAD signal into partial wave
contributions.},
keywords = {Materials Science (cond-mat.mtrl-sci) (Other) / FOS:
Physical sciences (Other)},
cin = {PGI-3 / PGI-6},
cid = {I:(DE-Juel1)PGI-3-20110106 / I:(DE-Juel1)PGI-6-20110106},
pnm = {5213 - Quantum Nanoscience (POF4-521) / Orbital Cinema -
Photoemission Orbital Cinematography: An ultrafast wave
function lab (101071259)},
pid = {G:(DE-HGF)POF4-5213 / G:(EU-Grant)101071259},
typ = {PUB:(DE-HGF)25},
doi = {10.48550/ARXIV.2507.12113},
url = {https://juser.fz-juelich.de/record/1044387},
}