Magneto-optical interactions in single-molecule magnets: Low-temperature photon-induced demagnetization
| Autor: | Jean-Paul Kappler, Emilie Voirin, Bertrand Donnio, Emmanuel Terazzi, F. Scheurer, Guillaume Rogez, Dominique Luneau, Christophe Aronica, Guillaume Chastanet, Eric Rivière, Loïc Joly, Jean-Louis Gallani |
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| Přispěvatelé: | Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Department of Inorganic, Analytical and Applied Chemistry - University of Geneva, Laboratoire des Multimatériaux et Interfaces (LMI), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2010 |
| Předmět: |
Photon
Spin transition 02 engineering and technology [CHIM.INOR]Chemical Sciences/Inorganic chemistry 010402 general chemistry 01 natural sciences [CHIM]Chemical Sciences General Materials Science Single-molecule magnet Physics Magnetic moment Condensed matter physics XMCD Demagnetizing field Superradiance [CHIM.MATE]Chemical Sciences/Material chemistry General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Ray 0104 chemical sciences Magnet Phonons 0210 nano-technology Photomagnetism Microwave |
| Zdroj: | Solid State Sciences Solid State Sciences, Elsevier, 2010, 12 (8), pp.1307-1313. ⟨10.1016/j.solidstatesciences.2010.06.003⟩ |
| ISSN: | 1293-2558 |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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