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Merger of the Laser Spectroscopy Experiments
2023/03/01
In early 2023, the VUV spectroscopy and UV-Vis spectroscopy experiments were combined. The existing molecular beam apparatus and the associated laser systems were dismantled and combined into one apparatus. At the new apparatus it is thus possible to generate clusters in a molecular beam and subsequently ionize them using the VUV laser system or perform photodissociation experiments using the UV-Vis laser system. Thus, both the ionization potentials and the optical properties of the clusters can be studied in a combined experiment.
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Surprisingly Large Electronic g-Factors in p-Doped Lead Clusters
2023/02/01
A Magnetic Molecular Beam Deflection Study Coupled with Modern Quantum Chemistry
Molecular Magnetism is a thriving field of research with remarkable discoveries being made with single-molecule magnets where d- and f-block elements serve as paramagnetic centers. Tetrel clusters p-doped with elements of the triel group also state magnetically highly relevant systems. If lead is chosen as tetrel cage element, the endohedral clusters are found to exhibit peculiar spin-orbit coupling effects with strongly impacted electronic g-factors.
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Recent Publications
2023/01/01
Our publications in recent months are about a correlated study of the Zeeman and Stark effect on the p-doped tin clusters MSn 12 with M=Al, Ga, In, as well as the observation of linearly scaling dipole moments of quasispherical Si clusters in electric deflection experiments, both supported by modern quantum chemistry.
Physikalische Chemie mikroskopischer Systeme
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Vacancy: Combined Deflection Experiments on p-Doped Tin Clusters
To the Internship or Thesis
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Vacancy: Vibrationally-Resolved Photodissociation Spectroscopy and Franck-Condon Simulations of Cu₂⁺ and Ag₂⁺
To the Internship of Thesis
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Vacancy: Design and Commissioning of the Temperature Control for a Magnetron Sputter Source
To the Internship or Thesis
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Vacancy: Magnetic Properties of Doped Tin Clusters at Low Temperatures
To the Internship or Thesis
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Vacancy: TPD/TPR Studies of H₂, Ethane und Propane on Supported Metal Oxide Layers
To the Internship or Thesis
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Vacancy: Characterization and Optimization of the Quadrupole Mass Filter Resolution
To the Internship or Thesis
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Welcome to the Research Group of Prof. Dr. Rolf Schäfer!
Our work is all about clusters, which in chemistry and physics stands for particles that are made up of a few atoms. Between atomic and solid state physics, interesting effects occur which we aim to understand. Our research activities range from the preparation and characterization of clusters of various sizes and compositions in high vacuum and on defined surfaces to their theoretical description with modern quantum chemical methods.
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