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

Kaushik Bairagi, Olga Iasco, Amandine Bellec (), Alexey Kartsev, Dongzhe Li, Jérôme Lagoute, Cyril Chacon, Yann Girard, Sylvie Rousset, Frédéric Miserque, Yannick J Dappe, Alexander Smogunov, Cyrille Barreteau, Marie-Laure Boillot, Talal Mallah and Vincent Repain ()
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Kaushik Bairagi: Laboratoire Matériaux et Phénomènes Quantiques, Univ Paris Diderot,
Olga Iasco: Institut de Chimie Moléculaire et des Matériaux d’Orsay, Univ Paris Sud, Univ Paris Saclay
Amandine Bellec: Laboratoire Matériaux et Phénomènes Quantiques, Univ Paris Diderot,
Alexey Kartsev: Service de Physique de l’Etat Condensé, DSM/IRAMIS/SPEC (CNRS UMR 3680), CEA Saclay, Univ Paris Saclay
Dongzhe Li: Service de Physique de l’Etat Condensé, DSM/IRAMIS/SPEC (CNRS UMR 3680), CEA Saclay, Univ Paris Saclay
Jérôme Lagoute: Laboratoire Matériaux et Phénomènes Quantiques, Univ Paris Diderot,
Cyril Chacon: Laboratoire Matériaux et Phénomènes Quantiques, Univ Paris Diderot,
Yann Girard: Laboratoire Matériaux et Phénomènes Quantiques, Univ Paris Diderot,
Sylvie Rousset: Laboratoire Matériaux et Phénomènes Quantiques, Univ Paris Diderot,
Frédéric Miserque: CEA/DEN/DANS/DPC/SCCME, Laboratoire d’Etude de la Corrosion Aqueuse
Yannick J Dappe: Service de Physique de l’Etat Condensé, DSM/IRAMIS/SPEC (CNRS UMR 3680), CEA Saclay, Univ Paris Saclay
Alexander Smogunov: Service de Physique de l’Etat Condensé, DSM/IRAMIS/SPEC (CNRS UMR 3680), CEA Saclay, Univ Paris Saclay
Cyrille Barreteau: Service de Physique de l’Etat Condensé, DSM/IRAMIS/SPEC (CNRS UMR 3680), CEA Saclay, Univ Paris Saclay
Marie-Laure Boillot: Institut de Chimie Moléculaire et des Matériaux d’Orsay, Univ Paris Sud, Univ Paris Saclay
Talal Mallah: Institut de Chimie Moléculaire et des Matériaux d’Orsay, Univ Paris Sud, Univ Paris Saclay
Vincent Repain: Laboratoire Matériaux et Phénomènes Quantiques, Univ Paris Diderot,

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: 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.

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12212

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DOI: 10.1038/ncomms12212

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