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MA: Fachverband Magnetismus

MA 30: PhD Focus Session: Non-equilibrium dynamics in theory and experiment

MA 30.2: Hauptvortrag

Mittwoch, 29. März 2023, 15:30–16:00, HSZ 02

Spin-switchable molecules in interaction with their environment. — •Cyrille Barreteau — University Paris-Saclay, CEA, CNRS,SPEC, 91191, Gif-sur-Yvette, France

Molecules that can switch spin-state form a very important class of molecules that offers a formidable test bed for fundamental studies and applied research due to the multiple possible channels to tune their properties. Spin-crossover (SCO) molecules are the most common spin-switchable molecules where the spin-state of the metal complex changes under the application of an external stimulus such as light, temperature, pressure etc.. SCO crystals have been the subject of intense studies however; it is much more recent that these molecules have been deposited on surfaces. In practice, the number of SCO that are robust enough to remain intact on surface and retain their switchability is rather limited. In addition, from the modelling point, these systems are also delicate to describe accurately. In this talk, I will present coupled experimental and theoretical results of various spin-switchable molecules that have successfully been deposited on inorganic surfaces. It will be shown how their properties are affected by their environment, in particular we will investigate the role of molecule-molecule and molecule-substrate interaction or the application of an electric field. This will provide us with the tools to manipulate the properties of such systems and give hint for possible strategies to optimize the magneto-transport properties of materials/devices.