Mesoscopic quantum coherence in antiferromagnetic molecular clusters
  From inelastic neutron scattering experiments, we demonstrate quantum tunneling of the Neel vector in the antiferromagnetic molecular ferric wheel CsFe8. Analysis of the linewidth of the tunneling transition evidences coherent tunneling. 
O. Waldmann, C. Dobe, H. Mutka, A. Furrer, H. U. G\"udel