Spin Effects in Adsorbed Molecules
- PC Department Seminar
- Date: May 16, 2024
- Time: 02:00 PM (Local Time Germany)
- Speaker: Richard Berndt
- Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel
- Location: Building G
- Room: 2.06
- Host: Akitoshi Shiotari

Using low-temperature scanning tunneling microscopy and occasionally
synchrotron radiation methods we investigate molecules at surfaces. The
experiments along with model calculations reveal molecular spin states
and electron transport properties as well as intermolecular
interactions.
This talk will address phenomena such as spin-state switching in
spin-crossover compounds. We further demonstrate that diamagnetic
molecules can acquire a spin when they are arranged into suitable
supramolecules on Pb. As a consequence, sharp resonances develop in the
Pb superconductor gap. We harness them to enhance the inelastic
tunneling spectroscopy of molecular vibrations. This new methods
drastically increases the sensitivity and also improves the energy
resolution beyond the thermal broadening limit.
Work done in
collaboration with Alexander Weismann, Jan Homberg, Manuel Gruber,
Troels Markussen, Sven Johannsen, Sascha Schüddekopf, Sascha Ossinger,
Jan Grunwald, Alexander Herman, Heiko Wende, Felix Tuczek, Chao Li,
Roberto Robles, Nicolas Lorente and Niklas Ide.