Ultrafast and persistent photoinduced phase transition at room temperature monitored by streaming powder diffraction

Marius Hervé, Gaël Privault, Elzbieta Trzop, Shintaro Akagi, Yves Watier, Serhane Zerdane, Ievgeniia Chaban, Ricardo G. Torres Ramírez, Celine Mariette, Alix Volte, Marco Cammarata, Matteo Levantino, Hiroko Tokoro (), Shin-ichi Ohkoshi () and Eric Collet ()
Additional contact information
Marius Hervé: CNRS, IPR (Institut de Physique de Rennes) - UMR 6251
Gaël Privault: CNRS, IPR (Institut de Physique de Rennes) - UMR 6251
Elzbieta Trzop: CNRS, IPR (Institut de Physique de Rennes) - UMR 6251
Shintaro Akagi: University of Tsukuba
Yves Watier: ESRF – The European Synchrotron
Serhane Zerdane: SwissFEL, Paul Scherrer Institut
Ievgeniia Chaban: CNRS, IPR (Institut de Physique de Rennes) - UMR 6251
Ricardo G. Torres Ramírez: CNRS, IPR (Institut de Physique de Rennes) - UMR 6251
Celine Mariette: CNRS, IPR (Institut de Physique de Rennes) - UMR 6251
Alix Volte: ESRF – The European Synchrotron
Marco Cammarata: ESRF – The European Synchrotron
Matteo Levantino: ESRF – The European Synchrotron
Hiroko Tokoro: The University of Tokyo
Shin-ichi Ohkoshi: The University of Tokyo
Eric Collet: CNRS, IPR (Institut de Physique de Rennes) - UMR 6251

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Ultrafast photoinduced phase transitions at room temperature, driven by a single laser shot and persisting long after stimuli, represent emerging routes for ultrafast control over materials’ properties. Time-resolved studies provide fundamental mechanistic insight into far-from-equilibrium electronic and structural dynamics. Here we study the photoinduced phase transformation of the Rb0.94Mn0.94Co0.06[Fe(CN)6]0.98 material, designed to exhibit a 75 K wide thermal hysteresis around room temperature between MnIIIFeII tetragonal and MnIIFeIII cubic phases. We developed a specific powder sample streaming technique to monitor by ultrafast X-ray diffraction the structural and symmetry changes. We show that the photoinduced polarons expand the lattice, while the tetragonal-to-cubic photoinduced phase transition occurs within 100 ps above threshold fluence. These results are rationalized within the framework of the Landau theory of phase transition as an elastically-driven and cooperative process. We foresee broad applications of the streaming powder technique to study non-reversible and ultrafast dynamics.

Date: 2024
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DOI: 10.1038/s41467-023-44440-3

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