Open Access Nano Express

Spin dynamics of an ultra-small nanoscale molecular magnet

Orion Ciftja

Author Affiliations

Department of Physics, Prairie View A&M University, Prairie View, TX, 77446, USA

Nanoscale Research Letters 2007, 2:168-174 doi:10.1007/s11671-007-9049-5


The electronic version of this article is the complete one and can be found online at:


Received:19 December 2006
Accepted:13 February 2007
Published:6 March 2007

© 2007 to the authors

Abstract

We present mathematical transformations which allow us to calculate the spin dynamics of an ultra-small nanoscale molecular magnet consisting of a dimer system of classical (high) Heisenberg spins. We derive exact analytic expressions (in integral form) for the time-dependent spin autocorrelation function and several other quantities. The properties of the time-dependent spin autocorrelation function in terms of various coupling parameters and temperature are discussed in detail.

Keywords:
Spin dynamics; Nanoscale molecular magnetism; Time-dependent spin autocorrelation function; Exchange interaction; Biquadratic exchange interaction; 75.10.Hk; 75.50.Xx

Nano Express

[1-15]

References

  1. Gatteschi D, Caneschi A, Pardi L, Sessoli R:

    Science. 1994, 265:1054.

    COI number [1:CAS:528:DyaK1cXjvFCjsQ%3D%3D]

    Publisher Full Text OpenURL

  2. Lascialfari A, Gatteschi D, Borsa F, Cornia A:

    Phys. Rev. B. 1997, 55:14341.

    COI number [1:CAS:528:DyaK2sXjslyjtLw%3D]

    Publisher Full Text OpenURL

  3. Barra AL, Caneschi A, Cornia A, de Biani FF, Gatteschi D, Sangregorio C, Sessoli R, Sorace L:

    Journal of the American Chemical Society. 1999, 121(22):5302.

    COI number [1:CAS:528:DyaK1MXjt1artb8%3D]

    Publisher Full Text OpenURL

  4. Bino A, Johnston DC, Goshorn DP, Halbert TR, Stiefel EI:

    Science. 1988, 241:1479.

    COI number [1:CAS:528:DyaL1MXhsVKmsLo%3D]

    Publisher Full Text OpenURL

  5. Caneschi A, Cornia A, Fabretti AC, Gatteschi D, Malavasi W:

    Inorg. Chem.. 1995, 34:4660.

    COI number [1:CAS:528:DyaK2MXnsVKktb0%3D]

    Publisher Full Text OpenURL

  6. Lascialfari A, Tabak F, Abbati GL, Borsa F, Corti M, Gatteschi D:

    J. Appl. Phys.. 1999, 85:4539.

    COI number [1:CAS:528:DyaK1MXis1emtb4%3D]

    Publisher Full Text OpenURL

  7. Ciftja O, Luban M, Auslender M, Luscombe JH:

    Phys. Rev. B.. 1999, 60:10122.

    COI number [1:CAS:528:DyaK1MXmsVelt7o%3D]

    Publisher Full Text OpenURL

  8. Luscombe J, Luban M, Borsa F:

    J. Chem. Phys.. 1998, 108:7266.

    COI number [1:CAS:528:DyaK1cXisVaqsLo%3D]

    Publisher Full Text OpenURL

  9. Lascialfari A, Jang ZH, Borsa F, Gatteschi D, Cornia A:

    J. Appl. Phys.. 1998, 83:6946.

    COI number [1:CAS:528:DyaK1cXjtFOnu7c%3D]

    Publisher Full Text OpenURL

  10. Muller G:

    Phys. Rev. Lett.. 1988, 60:2785. Publisher Full Text OpenURL

  11. Gerling RW, Landau DP:

    Phys. Rev. Lett.. 1989, 63:812. Publisher Full Text OpenURL

  12. Ciftja O:

    Physica A. 2000, 286:541. Publisher Full Text OpenURL

  13. Ciftja O:

    J. Phys. A: Math. Gen.. 2001, 34:1611.

    COI number [1:CAS:528:DC%2BD3MXitlOlsL0%3D]

    Publisher Full Text OpenURL

  14. Le Gall F, de Biani FF, Caneschi A, Cinelli P, Cornia A, Fabretti AC, Gatteschi D:

    Inorg. Chem. Acta. 1997, 262:123.

    COI number [1:CAS:528:DyaK2sXmsFGrtro%3D]

    Publisher Full Text OpenURL

  15. Muller G:

    J. Phys. (Paris). 1988, C8:1403. OpenURL