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

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Abstract.

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.

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References

  1. R. Sessoli, D. Gatteschi, A. Caneschi, M.A. Novak, Nature 365, 141 (1993)

    Article  Google Scholar 

  2. D. Gatteschi, A. Caneschi, L. Pardi, R. Sessoli, Science 265, 1054 (1994)

    Google Scholar 

  3. A.J. Legget, in Quantum tunneling of Magnetization (edited by L. Gunther, B. Barbara (Kluwer, Dodrecht, 1995)

  4. J.R. Friedman, M.P. Sarachik, J. Tejada, R. Ziolo, Phys. Rev. Lett. 76, 3830 (1996)

    Article  Google Scholar 

  5. L. Thomas, F. Lionti, R. Ballou, D. Gatteschi, R. Sessoli, B. Barbara, Nature 383, 145 (1996)

    Article  Google Scholar 

  6. W. Wernsdorfer, R. Sessoli, Science 284, 133 (1999)

    Article  Google Scholar 

  7. M.N. Leuenberger, D. Loss, Nature 410, 789 (2001)

    Article  Google Scholar 

  8. L. Zhao, C.J. Matthews, L.K. Thompson, S.L. Heath, Chem. Commun., 265 (2000)

  9. O. Waldmann, L. Zhao, L.K. Thompson, Phys. Rev. Lett. 88, 066401 (2002)

    Article  Google Scholar 

  10. D.D. Awschalom, D.P. DiVincenzo, J.F. Smyth, Science 258, 414 (1992)

    Google Scholar 

  11. S. Gider, D.D. Awschalom, T. Douglas, S. Mann, M. Chaparala, Science 268, 77 (1995)

    Google Scholar 

  12. O. Waldmann, J. Hassmann, P. Müller, G.S. Hanan, D. Volkmer, U.S. Schubert, J.-M. Lehn, Phys. Rev. Lett. 78, 3390 (1997)

    Article  Google Scholar 

  13. A. Bencini, D. Gatteschi, EPR of Exchange Coupled Systems (Springer Verlag, Berlin, 1990)

  14. E. Liviotti, S. Carretta, G. Amoretti, J. Chem. Phys. 117, 3361 (2002)

    Article  Google Scholar 

  15. The torque experienced by a magnetically anisotropic material in a uniform magnetic field \({\bf B}\) is given by \({\bf M}\times {\bf B}\), where \({\bf M}\) is the magnetization of the sample

  16. O. Waldmann, Europhys. Lett. 60, 302 (2002)

    Google Scholar 

  17. T. Guidi, S. Carretta, P. Santini, E. Liviotti, N. Magnani, C. Mondelli, O. Waldmann, L. K. Thompson, L. Zhao, C. D. Frost, G. Amoretti, R. Caciuffo, submitted

  18. S. Carretta, J. van Slageren, T. Guidi, E. Liviotti, C. Mondelli, D. Rovai, A. Cornia, A.L. Dearden, M. Affronte, C.D. Frost, R.E.P. Winpenny, D. Gatteschi, G. Amoretti, R. Caciuffo, Phys. Rev. B 67, 094405 (2003)

    Article  Google Scholar 

  19. O. Waldmann, R. Koch, S. Schromm, J. Schülein, P. Müller, I. Bernt, R.W. Saalfrank, F. Hampel, E. Balthes, Inorg. Chem. 40, 2986 (2001)

    Article  Google Scholar 

  20. This should be more properly named collinear magnetization

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Authors and Affiliations

  1. Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica, Universitá di Parma, 43100, Parma, Italy

    S. Carretta, P. Santini, E. Liviotti, N. Magnani & G. Amoretti

  2. Istituto Nazionale per la Fisica della Materia, Universitá Politecnica delle Marche, 60131, Ancona, Italy

    T. Guidi & R. Caciuffo

Authors
  1. S. Carretta
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  2. P. Santini
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  3. E. Liviotti
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  4. N. Magnani
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  5. T. Guidi
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  6. R. Caciuffo
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  7. G. Amoretti
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Corresponding author

Correspondence to G. Amoretti.

Additional information

Received: 9 October 2003, Published online: 8 December 2003

PACS:

75.45. + j Macroscopic quantum phenomena in magnetic systems - 75.50.Xx Molecular magnets - 52.70.Ds Electric and magnetic measurements

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Carretta, S., Santini, P., Liviotti, E. et al. Macroscopic evidence of quantum coherent oscillations of the total spin in the Mn-[ \(\mathsf{3\times3}\)] molecular nanomagnet. Eur. Phys. J. B 36, 169–173 (2003). https://doi.org/10.1140/epjb/e2003-00331-0

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  • DOI: https://doi.org/10.1140/epjb/e2003-00331-0

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