GOURNAY, Lucas; CHABAN, Ievgeniia; MEVELLEC, Jean-Yves; HUMBERT, Bernard; JANOD, Etienne; GUÉRIN, Laurent; CAMMARATA, Marco; DARO, Nathalie; CHASTANET, Guillaume; COLLET, Eric

doi:10.1016/j.cplett.2022.139395

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GOURNAY, Lucas
Institut de Physique de Rennes [IPR]

CHABAN, Ievgeniia
Institut de Physique de Rennes [IPR]

MEVELLEC, Jean-Yves
Institut des Matériaux de Nantes Jean Rouxel [IMN]

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Article de revue

Este ítem está publicado en

Chemical Physics Letters. 2022-03, vol. 791, p. 139395 (6 p.)

Elsevier

Resumen en inglés

The Light-Induced Excited Spin-State Trapping (LIESST) process allows tuning the electronic state of spin-crossover materials from low (LS) to high spin (HS) states. The photoinduced HS state is long-lived, up to a characteristic temperature, T(LIESST), above which the system relaxes rapidly to the LS state. We study the effect of light irradiance on competing LS→HS up-conversion and HS→LS thermal relaxation on the [Fe(phen)2(NCS)2] system. Raman spectroscopy and magnetic measurements are used to investigate this phenomenon. An empiric model describes the competition between up conversion and thermal relaxation mechanisms and the stabilization of photo-stationary state towards higher temperature.< Leer menos

Palabras clave en inglés

LIESST

Spin crossover

Photoinduced phenomena

Raman

Out-of-equilibrium

DOI

http://dx.doi.org/10.1016/j.cplett.2022.139395

Proyecto ANR

Transitions de phase ELECTROnique de matériaux moleculaires controllées par PHONONIQUE non-linéaire
Trajectoires multiples vers les états excités - ANR-19-CE29-0018

Orígen

Importado de Hal

Centros de investigación

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026