Tootfinder

Circular dichroism in the photoelectron angular distribution of achiral molecules
Christian S. Kern, Xiaosheng Yang, Giovanni Zamborlini, Simone Mearini, Matteo Jugovac, Vitaliy Feyer, Umberto De Giovannini, Angel Rubio, Serguei Soubatch, Michael G. Ramsey, F. Stefan Tautz, Peter Puschnig
https://arxiv.org/abs/2507.12113

Circular dichroism in the photoelectron angular distribution of achiral molecules
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 invest…

Multi-Orbital Charge Transfer into Nonplanar Cycloarenes Revealed with CO-Functionalized Tips
Anja Haags, Alexander Reichmann, Zilin Ruan, Qitang Fan, Larissa Egger, Hans Kirschner, Tim Naumann, Simon Werner, Olaf Kleykamp, Jose Martinez-Castro, Felix L\"upke, Fran\c{c}ois C. Bocquet, Christian Kumpf, Serguei Soubatch, Alexander Gottwald, Georg Koller, Michael G. Ramsey, Mathias Richter, J\"org Sundermeyer, Peter Puschnig, J. Michael Gottfried, F. Stefan Tautz, Sabine Wenzel

Multi-Orbital Charge Transfer into Nonplanar Cycloarenes Revealed with CO-Functionalized Tips
On-surface synthesis has allowed for the tuneable preparation of numerous molecular systems with variable properties. Recently, we demonstrated the highly selective synthesis of kekulene (>99%) on Cu(111) and isokekulene (92%) on Cu(110) from the same molecular precursor (Ruan et al., Angew. Chem. Int. Ed. 2025, e202509932). Scanning tunneling microscopy with CO-functionalized tips can identify the single molecules on the basis of their geometric structure at a low coverage on Cu(110), but it a…