Magneto-optical interactions in single-molecule magnets: Low-temperature photon-induced demagnetization.
Fiche publication
Date publication
août 2010
Auteurs
Membres identifiés du Cancéropôle Est :
Dr GALLANI Jean-Louis
Tous les auteurs :
Donnio B, Riviere E, Terazzi E, Voirin E, Aronica C, Chastanet G, Luneau D, Rogez G, Scheurer F, Joly L, Kappler JP, Gallani JL
Lien Pubmed
Résumé
We show that the irradiation of SMM molecules at optical wavelengths can drive an increase or a decrease of the magnetic moment of a SMM, even though the energy of the photons does not correspond to a precise electronic or spin transition, the light pulse triggering a phonon-assisted spin transition. The process is sensitive to the power of the incident light. This result most probably explains why it has been so far impossible to observe the opening of the hysteresis loop on thin films of SMM with the XMCD technique. The consequences of these observations are manifold: they bring a means of controlling molecular magnets, open prospects in the field of quantum computing, and may enable the realization of coherent microwave sources through stimulated superradiance. (C) 2010 Elsevier Masson SAS. All rights reserved.
Référence
Solid State Sci. 2010 Aug;12(8):1307-13.