Time-Resolved Pump-Probe Diffraction Experiment at SOLEIL Synchrotron: Photoinduced Spin Transition in the Molecular Crystal [TPA Fe(III) TCC] PF6 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Acta Physica Polonica A Année : 2012

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

Claire Laulhé
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Sylvain Ravy
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Pierre Fertey
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Erik Elkaim
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Pierre Féret
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Stéphanie Hustache
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Eric Collet
Maciej Lorenc
Hervé Cailleau

Résumé

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.

Dates et versions

hal-00909538 , version 1 (26-11-2013)

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Citer

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, 2012, 121 (2), pp.332-335. ⟨10.12693/APhysPolA.121.332⟩. ⟨hal-00909538⟩
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