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Time-Resolved Pump-Probe Diffraction Experiment at SOLEIL Synchrotron: Photoinduced Spin Transition in the Molecular Crystal [TPA Fe(III) TCC] PF6

Abstract : We present the first time-resolved pump-probe experiment performed at synchrotron SOLEIL at the CRISTAL diffraction beamline. The time-resolved setup will be used in the near future for sub-ns time resolution experiments. We studied spin state switching in a [TPA Fe(III) TCC] PF6 single crystal as induced by a ¼ 6 ns laser pulse (1064 nm), by measuring the 3D diffraction volume of the 002 Bragg reflection as a function of time after excitation. The intensity profiles (rocking curves) are found to evolve at two characteristic timescales, namely hundreds of ns and few ¹s, exhibiting subtle profile changes and peak broadenings. Consistently with previous studies, we interpret these features as due to structural inhomogeneities related to laser-induced deformation wave propagation and heat diffusion, which both start from the absorbing sites.
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https://hal.archives-ouvertes.fr/hal-00909538
Contributor : Muriel Cadieu <>
Submitted on : Tuesday, November 26, 2013 - 2:10:38 PM
Last modification on : Friday, July 9, 2021 - 1:06:02 PM

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  • HAL Id : hal-00909538, version 1

Citation

Claire Laulhé, Sylvain Ravy, Pierre Fertey, Erik Elkaim, Fabien Legrand, et al.. Time-Resolved Pump-Probe Diffraction Experiment at SOLEIL Synchrotron: Photoinduced Spin Transition in the Molecular Crystal [TPA Fe(III) TCC] PF6. Acta Physica Polonica A, Polish Academy of Sciences. Institute of Physics, 2012, 121 (2), pp.332-335. ⟨hal-00909538⟩

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