Fourfold Differential Photoelectron Circular Dichroism
K. Fehre, Nikolay M. Novikovskiy, Sven Grundmann, Gregor Kastirke, S. Eckart, Florian Trinter, J. Rist, Alexander Hartung, D. Trabert, Christopher J. Janke, G. Nalin, M. Pitzer, S. Zeller, Florian Wiegandt, M. Weller, M. Kircher, M. Hofmann, L. Ph. H. Schmidt, André Knie, Andreas Hans, Ltaief Ben Ltaief, Arno Ehresmann, Robert Berger, H. Fukuzawa, Kiyoshi Ueda, H. Schmidt‐Böcking, Joshua Williams, T. Jahnke, R. Dörner, M. S. Schöffler, Philipp V. Demekhin
Abstract
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.