Cooperative elastic switching vs laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse
Langue
en
Article de revue
Ce document a été publié dans
CrystEngComm. 2016, vol. 18, n° 38, p. 7269-7275
Royal Society of Chemistry
Résumé en anglais
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 ...Lire la suite >
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.< Réduire
Project ANR
Etude femtoseconde rayons X et optique de la dynamique ultrarapide de photocommutation de matériaux moléculaires magnétiques - ANR-13-BS04-0002
Origine
Importé de halUnités de recherche