SKM 2023 – scientific programme
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O: Fachverband Oberflächenphysik
O 22: Poster Session: Organic Molecules on Inorganic Substrates I
O 22.4: Poster
Monday, March 27, 2023, 18:00–20:00, P2/EG
Vectorial Electron Spin Filtering by an All-Chiral Metal-Molecule Heterostructure — •Chetana Badala Viswanatha1, Johannes Stöckl1, Benito Arnoldi1, Sebastian Becker1,2, Martin Aeschlimann1, and Benjamin Stadtmüller1,3 — 1Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany — 2Department of Chemistry, University of Kaiserslautern, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany — 3Institute of Physics, Johannes Gutenberg University Mainz, Staudingerweg 7, 55128 Mainz, Germany
Chiral-induced spin selective transmission (CISS) has predominantly been explored in structurally helical molecules on surfaces, where the spin selectivity only affects the spin polarization of the electrons along their direction of propagation. Here, we demonstrate[1] a spin-selective electron transmission for a point-chiral molecule 3-Methylcyclohexanone (3-MCHO) adsorbed on the chiral Cu(643) surface. Using spin- and momentum-resolved photoelectron spectroscopy, we detect a spin-dependent electron transmission through a single layer of 3-MCHO molecules that depends on all three components of the electrons’ spin. The findings are attributed to the enantiomer-specific adsorption configuration on the surface. This opens the intriguing opportunity to selectively tune CISS by the enantiospecific molecule-surface interaction in all-chiral heterostructures.
[1] J. Phys. Chem. Lett. 2022, 13, 26, 6244-6249.