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Article Dans Une Revue Physical Review Letters Année : 2008

Spin Chirality in a Molecular Dysprosium Triangle : The archetype of the non-collinear Ising Model

Résumé

Single crystal magnetic studies combined with a theoretical analysis show that cancellation of the magnetic moments in the trinuclear Dy3 cluster Dy33-OH2L3ClH2O5Cl3, resulting in a nonmagnetic ground doublet, originates from the noncollinearity of the single-ion easy axes of magnetization of the Dy3 ions that lie in the plane of the triangle at 120 one from each other. This gives rise to a peculiar chiral nature of the ground nonmagnetic doublet and to slow relaxation of the magnetization with abrupt accelerations at the crossings of the discrete energy levels.

Dates et versions

hal-00524337 , version 1 (07-10-2010)

Identifiants

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J. Luzon, Kevin Bernot, R. Sessoli, I.J. Hewitt, A.K. Powell. Spin Chirality in a Molecular Dysprosium Triangle : The archetype of the non-collinear Ising Model. Physical Review Letters, 2008, 47, pp.3700-3708. ⟨10.1103/PhysRevLett.100.247205⟩. ⟨hal-00524337⟩
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