Regensburg 2022 – scientific programme

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MA: Fachverband Magnetismus

MA 25: Ultrafast Magnetization Effects 2

MA 25.7: Talk

Wednesday, September 7, 2022, 16:30–16:45, H43

X-ray absorption spectroscopy on spin-crossover molecules — •Lea Spieker¹, Tobias Lojewski¹, Carolin Schmitz-Antoniak², Florin Radu³, Torsten Kachel³, Laurent Mercadier⁴, Andreas Scherz⁴, Loïc le Guyader⁴, Martin Teichmann⁴, Robert Carley⁴, Giuseppe Mercurio⁴, Natalia Gerasimova⁴, Benjamin van Kuiken⁴, Cammille Carinan⁴, David Hickin⁴, Damian Günzing¹, Soma Salamon¹, Gérald Kämmerer¹, Peter Kratzer¹, Klaus Sokolowski-Tinten¹, Manuel Gruber¹, Andrea Eschenlohr¹, Katharina Ollefs¹, Senthil Kumar Kuppusamy⁵, Mario Ruben^5,6, Uwe Bovensiepen¹, and Heiko Wende¹ — ¹University of Duisburg-Essen and CENIDE — ²University of Applied Science Wildau — ³Helmholtz Center Berlin — ⁴European XFEL — ⁵Karlsruhe Institute of Technology — ⁶CNRS-University of Strasbourg

Spin-crossover molecules with abrupt spin-state switching in the room temperature regime are of great interest for future device applications. With X-ray absorption spectroscopy (XAS), it is possible to investigate their temperature-, visible light-, or X-ray induced spin-state switching. Recently, we performed static, temperature-dependent XAS measurements to study X-ray induced switching behavior as well as ultrafast time-resolved XAS measurements to analyze light-induced spin-state switching. We acknowledge European XFEL in Schenefeld, Germany, for the provision of X-ray free-electron laser beamtime at the SCS instrument. The financial support by CRC 1242 Projects A05, A07, B02, and C01 (Project-ID 278162697) is gratefully acknowledged.