CAMMARATA, Marco; BERTONI, Roman; LORENC, Maciej; CAILLEAU, Hervé; DI MATTEO, Sergio; MAURIAC, Cindy; MATAR, Samir; LEMKE, Henrik; CHOLLET, Matthieu; RAVY, Sylvain; LAULHÉ, Claire; LÉTARD, Jean-François; COLLET, Eric

doi:10.1103/PhysRevLett.113.227402

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CAMMARATA, Marco
Institut de Physique de Rennes [IPR]

BERTONI, Roman
Institut de Physique de Rennes [IPR]

LORENC, Maciej
Institut de Physique de Rennes [IPR]

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Article de revue

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Physical Review Letters. 2014-11-28, vol. 113, n° 22, p. 227402

American Physical Society

Resumen en inglés

We study the basic mechanisms allowing light to photoswitch at molecular scale a spin-crossover material from low-to high-spin state. Combined femtosecond x-ray absorption performed at LCLS X-FEL and optical spectroscopy reveal that the structural stabilization of the photoinduced HS state results from a two step structural trapping. Molecular breathing vibrations are first activated and rapidly damped as part of the energy is sequentially transferred to molecular bending vibrations. During the photoswitching, the system follows a curved trajectory on the potential energy surface.< Leer menos

DOI

http://dx.doi.org/10.1103/PhysRevLett.113.227402

Proyecto ANR

Etude femtoseconde rayons X et optique de la dynamique ultrarapide de photocommutation de matériaux moléculaires magnétiques

Orígen

Importado de Hal

Centros de investigación

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