Time-resolved resonant soft x-ray diffraction with free-electron lasers: 
Femtosecond dynamics across the Verwey transition in magnetite

Pontius, N.; Kachel, T.; Schüßler-Langeheine, C.; Schlotter, W. F.; Beye, M.; Sorgenfrei, F.; Chang, C. F.; Föhlisch, A.; Wurth, W.; Metcalf, P.; Leonov, I.; Yaresko, A.; Stojanovic, N.; Berglund, M.; Guerassimova, N.; Düsterer, S.; Redlin, H.; Dürr, H. A.

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Time-resolved resonant soft x-ray diffraction with free-electron lasers: Femtosecond dynamics across the Verwey transition in magnetite

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Yaresko, A.
Department Quantum Materials (Hidenori Takagi), Max Planck Institute for Solid State Research, Max Planck Society;
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Pontius, N., Kachel, T., Schüßler-Langeheine, C., Schlotter, W. F., Beye, M., Sorgenfrei, F., et al. (2011). Time-resolved resonant soft x-ray diffraction with free-electron lasers: Femtosecond dynamics across the Verwey transition in magnetite. Applied Physics Letters, 98(18): 182504.

Cite as: https://hdl.handle.net/21.11116/0000-000E-BF41-2

Abstract

Resonant soft x-ray diffraction (RSXD) with femtosecond (fs) time resolution is a powerful tool for disentangling the interplay between different degrees of freedom in strongly correlated electron materials. It allows addressing the coupling of particular degrees of freedom upon an external selective perturbation, e. g., by an optical or infrared laser pulse. Here, we report a time-resolved RSXD experiment from the prototypical correlated electron material magnetite using soft x-ray pulses from the free-electron laser FLASH in Hamburg. We observe ultrafast melting of the charge-orbital order leading to the formation of a transient phase, which has not been observed in equilibrium. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3584855]