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Article Dans Une Revue Polyhedron Année : 2009

Neutron spectroscopy and magnetic relaxation of the Mn-6 nanomagnets

Résumé

Inelastic neutron scattering has been used to determine the microscopic Hamiltonian describing two high-spin variants of the high-anisotropy Mn-6 nanomagnet. The energy spectrum of both systems is characterized by the presence of several excited total-spin multiplets partially overlapping the S = 12 ground multiplet. This implies that the relaxation processes of these molecules are different from those occurring in prototype giant-spin nanomagnets. In particular, we show that both the height of the energy barrier and resonant tunnelling processes are greatly influenced by low-lying excited total-spin multiplets.

Dates et versions

hal-00982068 , version 1 (23-04-2014)

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S. Carretta, T. Guidi, P. Santini, G. Amoretti, O. Pieper, et al.. Neutron spectroscopy and magnetic relaxation of the Mn-6 nanomagnets. Polyhedron, 2009, 28 (9-10), pp.1940-1944. ⟨10.1016/j.poly.2008.11.009⟩. ⟨hal-00982068⟩

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