Giant magnetisation step in Fe<sub>2</sub>: Molecular nanomagnets in the weak exchange limit
EL HALLAK, F.
Physikalisches Institut [Stuttgart] [Pfaffenwaldring 57, D–70550 Stuttgart, Germany]
London Centre for Nanotechnology
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Physikalisches Institut [Stuttgart] [Pfaffenwaldring 57, D–70550 Stuttgart, Germany]
London Centre for Nanotechnology
EL HALLAK, F.
Physikalisches Institut [Stuttgart] [Pfaffenwaldring 57, D–70550 Stuttgart, Germany]
London Centre for Nanotechnology
Physikalisches Institut [Stuttgart] [Pfaffenwaldring 57, D–70550 Stuttgart, Germany]
London Centre for Nanotechnology
VAN SLAGEREN, Joris
Physikalisches Institut [Stuttgart] [Pfaffenwaldring 57, D–70550 Stuttgart, Germany]
Institut für Physikalische Chemie [Stuttgart]
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Physikalisches Institut [Stuttgart] [Pfaffenwaldring 57, D–70550 Stuttgart, Germany]
Institut für Physikalische Chemie [Stuttgart]
Langue
en
Article de revue
Ce document a été publié dans
EPL - Europhysics Letters. 2011, vol. 95, n° 5, p. 57002 (5 p.)
European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing
Résumé en anglais
We investigate a Fe<sub>2</sub> molecular nanomagnet that displays a giant, field-induced step in its magnetisation curve. Detailed magnetisation and magnetic torque investigations demonstrate that in this Fe<sub>2</sub> ...Lire la suite >
We investigate a Fe<sub>2</sub> molecular nanomagnet that displays a giant, field-induced step in its magnetisation curve. Detailed magnetisation and magnetic torque investigations demonstrate that in this Fe<sub>2</sub> system the single-ion anisotropy is dominant over the isotropic exchange coupling. Accurate spin Hamiltonian parameter values and tensor orientations are obtained. The theoretical analysis reveals that this system is a very promising candidate for the direct observation of the Néel vector tunnel splitting in weakly coupled molecular nanomagnets.< Réduire
Mots clés
Molecular magnets
Magnetic anisotropy
Origine
Importé de halUnités de recherche