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Surface Plasmons Reveal Spin Crossover in Nanometric Layers

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journal contribution
posted on 05.10.2011 by Gautier Félix, Khaldoun Abdul-Kader, Tarik Mahfoud, Il’ya A. Gural’skiy, William Nicolazzi, Lionel Salmon, Gábor Molnár, Azzedine Bousseksou
Nano-objects and thin films displaying molecular spin-crossover phenomena have recently attracted much attention. However, the investigation of spin crossover at reduced sizes is still a big challenge. Here we demonstrate that surface plasmon polariton waves propagating along the interface between a metal and a dielectric layer can be used to detect the spin-state changes in the latter with high sensitivity, even at the nanometer scale.