Molecular-scale dynamics of light-induced spin cross-over in a two-dimensional layer

Abstract : Spin cross-over molecules show the unique ability to switch between two spin states when submitted to external stimuli such as temperature, light or voltage. If controlled at the molecular scale, such switches would be of great interest for the development of genuine molecular devices in spintronics, sensing and for nanomechanics. Unfortunately, up to now, little is known on the behaviour of spin cross-over molecules organized in two dimensions and their ability to show cooperative transformation. Here we demonstrate that a combination of scanning tunnelling microscopy measurements and ab initio calculations allows discriminating unambiguously between both states by local vibrational spectroscopy. We also show that a single layer of spin cross-over molecules in contact with a metallic surface displays light-induced collective processes between two ordered mixed spin-state phases with two distinct timescale dynamics. These results open a way to molecular scale control of two-dimensional spin cross-over layers.
Type de document :
Article dans une revue
Nature Communications, Nature Publishing Group, 2016, 7, 〈10.1038/ncomms12212〉
Liste complète des métadonnées

https://hal-cea.archives-ouvertes.fr/cea-01481430
Contributeur : Dominique Girard <>
Soumis le : jeudi 2 mars 2017 - 15:48:37
Dernière modification le : jeudi 15 mars 2018 - 15:06:24

Lien texte intégral

Identifiants

Citation

Kaushik Bairagi, Olga Iasco, Amandine Bellec, Alexey Kartsev, Dongzhe Li, et al.. Molecular-scale dynamics of light-induced spin cross-over in a two-dimensional layer. Nature Communications, Nature Publishing Group, 2016, 7, 〈10.1038/ncomms12212〉. 〈cea-01481430〉

Partager

Métriques

Consultations de la notice

100