Macroscopic evidence of quantum coherent oscillations of the total spin in the Mn-[ \(\mathsf{3\times3}\)] molecular nanomagnet

  • S. Carretta
  • P. Santini
  • E. Liviotti
  • N. Magnani
  • T. Guidi
  • R. Caciuffo
  • G. Amoretti


Molecular nanomagnets, besides promising to open new frontiers in technology, have attracted huge interest in the scientific community because they can exhibit the phenomenon known as quantum tunnelling of the magnetization, i.e. coherent fluctuations of the direction of the total spin vector. In this paper we study a different quantum phenomenon involving fluctuations of the magnitude of the total spin vector. These fluctuations are related to the mixing between states with different spin quantum number, and imply new macroscopic effects, which we theoretically investigated in the Mn-[ \(\mathsf{3\times3}\) grid.


Scientific Community Quantum Number Total Spin Spin Quantum Quantum Tunnelling 
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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  • S. Carretta
    • 1
  • P. Santini
    • 1
  • E. Liviotti
    • 1
  • N. Magnani
    • 1
  • T. Guidi
    • 2
  • R. Caciuffo
    • 2
  • G. Amoretti
    • 1
  1. 1.Istituto Nazionale per la Fisica della Materia, Dipartimento di FisicaUniversitá di ParmaParmaItaly
  2. 2.Istituto Nazionale per la Fisica della MateriaUniversitá Politecnica delle MarcheAnconaItaly

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