Quantum tunnelling of magnetization in the single-molecule magnet Mn-6 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue New Journal of Chemistry Année : 2009

Quantum tunnelling of magnetization in the single-molecule magnet Mn-6

Stefan Bahr
  • Fonction : Auteur
  • PersonId : 949443
Constantinos J. Milios
  • Fonction : Auteur
Leigh F. Jones
  • Fonction : Auteur
E.K. Brechin
  • Fonction : Auteur
Vincent Mosser
  • Fonction : Auteur

Résumé

We present magnetization measurements of the single-molecule magnet Mn-6 revealing various tunnel transitions inconsistent with a giant spin description. We propose a dimeric model of the molecule with two coupled spins S = 6, which involves crystal. field anisotropy, symmetric Heisenberg exchange interaction and an antisymmetric Dzyaloshinskii-Moriya exchange interaction. We show that this simplified model of the molecule explains the experimentally observed tunnel transitions and that the antisymmetric exchange interaction between the spins gives rise to tunnelling processes between spin states belonging to different spin multiplets

Dates et versions

hal-00982891 , version 1 (24-04-2014)

Identifiants

Citer

Stefan Bahr, Constantinos J. Milios, Leigh F. Jones, E.K. Brechin, Vincent Mosser, et al.. Quantum tunnelling of magnetization in the single-molecule magnet Mn-6. New Journal of Chemistry, 2009, 33 (6), pp.1231-1236. ⟨10.1039/B822305J⟩. ⟨hal-00982891⟩

Collections

UGA CNRS NEEL
255 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More