We report on a joint experimental and theoretical study of photoelectron circular dichroism (PECD) in methyloxirane. By detecting O 1s-photoelectrons in coincidence with fragment ions, we deduce the molecule's orientation and photoelectron emission direction in the laboratory frame. Thereby, we retrieve a fourfold differential PECD clearly beyond 50%. This strong chiral asymmetry is reproduced by ab initio electronic structure calculations. Providing such a pronounced contrast makes PECD of fixed-in-space chiral molecules an even more sensitive tool for chiral recognition in the gas phase.
@article{arxiv.2106.14170,
title = {Fourfold Differential Photoelectron Circular Dichroism},
author = {K. Fehre and N. M. Novikovskiy and S. Grundmann and G. Kastirke and S. Eckart and F. Trinter and J. Rist and A. Hartung and D. Trabert and C. Janke and G. Nalin and M. Pitzer and S. Zeller and F. Wiegandt and M. Weller and M. Kircher and M. Hofmann and L. Ph. H. Schmidt and A. Knie and A. Hans and L. Ben Ltaief and A. Ehresmann and R. Berger and H. Fukuzawa and K. Ueda and H. Schmidt-Böcking and J. B. Williams and T. Jahnke and R. Dörner and M. S. Schöffer and Ph. V. Demekhin},
journal= {arXiv preprint arXiv:2106.14170},
year = {2021}
}