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Article Dans Une Revue CrystEngComm Année : 2016

Cooperative elastic switching vs laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse

Résumé

Spin-crossover crystals show multi-step responses to femtosecond light excitation. The local molecular photo-switching from low to high spin states occurs on sub-picosecond timescale. It is followed by additional conversion due to elastic (ns) and thermal (µs) effects. In [Fe(phen)2(NCS)2] crystals discussed herein, the thermal switching can be made unobtrusive for the investigation of cooperative elastic switching. We evidence a cooperative transformation induced by lattice expansion through elastic coupling between molecules in the crystal, where up to 3 molecules are transformed per photon.
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Dates et versions

hal-01309441 , version 1 (29-04-2016)

Identifiants

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R Bertoni, Maciej Lorenc, T Graber, R Henning, K Moffat, et al.. Cooperative elastic switching vs laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse. CrystEngComm, 2016, 18 (38), pp.7269-7275. ⟨10.1039/C6CE00659K⟩. ⟨hal-01309441⟩
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