GRK Colloquium: Prof. Dr. Rudolf Bratschitsch
2026-01-16 14:00 - 15:00 (Europe/Berlin)
Venue: RUN auditorium 1st floor

Title: Magnonic waveguide networks

University of Münster

Spin waves (magnons) have emerged as a promising platform for next-generation physical computing. However, current experimental realizations of magnonic waveguides suffer from limited spin-wave propagation lengths and inefficient dispersion tuning capabilities. In my talk, I will present low-loss magnonic waveguides in a thin magnetic insulator film, fabricated with a new maskless silicon ion implantation technique. We demonstrate a large-scale magnonic network, paving the way for wafer-scale magnonic integrated circuits.

GRK Colloquium: Dr. Anna Rosławska
2026-01-23 14:00 - 15:00
Venue: RUN auditorium 1st floor

Single-molecule optics with atomic precisionMPI for Solid State Research StuttgartLuminescence, photosynthesis, and energy harvesting rely on processes originating at the spatial scale of individual molecules. Investigating the details of these mechanisms requires reaching subnm precision in optics, which becomes possible by combining optical spectroscopy with scanningprobe microscopy. In my talk, I will discuss how atomic-scale optics can be used to study the optical properties of single molecules and to drive photochemistry with sub-nm precision.

Young Colloquium:The Other Climate Crisis
2026-01-29 16:15 - 17:45
As Earth warms, regional climate signals are accumulating. Some signals, for example, land warming more than the ocean and the Arctic warming the most, were expected and successfully predicted. Underlying this success was the application of physical laws across a hierarchy of complexity. With additional warming, however, discrepancies between real-world signals and expectations are piling up, especially at regional scales.

The talk will provide an overview of the successes and discrepancies of physics based climate modeling and the paths forward which include using signals to test assumptions and processes driving a warming Earth for the first time, developing testable hypotheses, and revitalizing conceptual thinking by filling gaps across climate-system components and spatial scales.

Prof. Tiffany Shaw

University of Chicago, Geophysical Sciences

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GRK Colloquium: Prof. Dr. Renske van der Veen
2026-01-30 14:00 - 15:00
Venue: RUN auditorium 1st floor

Fast electrons and hard X-rays for unraveling atomic-scale dynamics in light-energy conversionDepartment Atomic-Scale Dynamics in Light-Energy Conversion, Helmholtz Zentrum Berlin

The increasing demand for renewable and low-cost energy motivates intensive research aimed at characterizing and optimizing materials that can efficiently convert (sun) light into usable energy in the form of electricity or chemical fuels. Conventional characterization techniques either lack the spatialresolution necessary to resolve individual atoms, or they lack the temporal resolution required to capture structural rearrangements as they evolve. Our group develops complementary X-ray and electron-based tools to visualize light-induced processes in materials on atomic length and time scales. In this talk I will introduce you to the techniques of ultrafast/time-resolved X-ray spectroscopy and transmission electron microscopy and provide several examples of how these techniques can be used in the fields of solar energy and catalysis.

Young Colloquium:Abschlussveranstaltung
2026-02-05 16:15 - 17:45
Prof. Ferdinand Evers,Franziska Fröhlich, Philipp Erhardt, Simon Spörl

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