Central European Journal of Physics

, Volume 7, Issue 2, pp 257–263 | Cite as

Magnetism of free and supported clusters: a comparative study

  • OndÅ™ej Å iprEmail author
  • Ján Minár
  • Hubert Ebert
Research Article


The presented work investigates the differences in magnetic properties of free and supported clusters via ab-initio calculations. The electronic structure of the clusters was calculated using a spin polarized relativistic multiple-scattering Green’s function formalism. We focus on Fe clusters of 2–9 atoms, either free or supported by Ni(001), and on Co clusters of 2–7 atoms, either free or supported by Au(111). For the supported clusters, the spin and orbital magnetic moments depend on the cluster size nearly monotonically, while for the free clusters large quasi-oscillations of magnetic moments with the cluster size were observed. Similarly, for supported clusters, the local spin magnetic moments decrease nearly linearly with increasing coordination number, while for free clusters of the same size range the trend is much more complicated. These findings are consistent with the fact that the spectral distribution function contains much sharper features for free clusters than for supported clusters.


clusters magnetism ab-initio calculations 

PACS (2008)

73.22.Dj 75.10.Lp 75.75.+a 


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  1. [1]
    I. M. L. Billas, J. A. Becker, A. Châtelain, W. A. de Heer, Phys. Rev. Lett. 71, 4067 (1993)CrossRefADSGoogle Scholar
  2. [2]
    I. M. L. Billas, A. Châtelain, W. A. de Heer, J. Magn. Magn. Mater. 168, 64 (1997)CrossRefADSGoogle Scholar
  3. [3]
    G. M. Pastor, J. Dorantes-Dávila, K. H. Bennemann, Phys. Rev. B 40, 7642 (1989)CrossRefADSGoogle Scholar
  4. [4]
    O. Šipr, M. Košuth, H. Ebert, Phys. Rev. B 70, 174423 (2004)CrossRefADSGoogle Scholar
  5. [5]
    M. L. Tiago, Y. Zhou, M. M. G. Alemany, Y. Saad, J. R. Chelikowsky, Phys. Rev. Lett. 97, 147201 (2006)CrossRefADSGoogle Scholar
  6. [6]
    A. N. Andriotis, M. Menon, Phys. Rev. B 57, 10069 (1998)CrossRefADSGoogle Scholar
  7. [7]
    P. Gambardella et al., Science 300, 1130 (2003)CrossRefADSGoogle Scholar
  8. [8]
    B. Lazarovits, L. Szunyogh, P. Weinberger, Phys. Rev. B 65, 104441 (2002)CrossRefADSGoogle Scholar
  9. [9]
    O. Å ipr et al., J. Phys.-Condens. Mat. 19, 096203 (2007)CrossRefADSGoogle Scholar
  10. [10]
    P. Mavropoulos, S. Lounis, R. Zeller, P. H. Dederichs, S. Blügel, Appl. Phys. A-Mater. 82, 103 (2006)CrossRefADSGoogle Scholar
  11. [11]
    J. A. Franco, A. Vega, F. Aguilera-Granja, Phys. Rev. B 60, 434 (1999)CrossRefADSGoogle Scholar
  12. [12]
    O. Diéguez, M. M. G. Alemany, C. Rey, P. Ordejón, L. J. Gallego, Phys. Rev. B 63, 205407 (2001)CrossRefADSGoogle Scholar
  13. [13]
    A. V. Postnikov, P. Entel, J. M. Soler, Eur. Phys. J. D 25, 261 (2003)CrossRefADSGoogle Scholar
  14. [14]
    E. Martínez, R. C. Longo, R. Robles, A. Vega, L. J. Gallego, Phys. Rev. B 71, 165425 (2005)CrossRefADSGoogle Scholar
  15. [15]
    R. Robles, A. Bergman, A. B. Klautau, O. Eriksson, L. Nordström, J. Phys.-Condens. Mat. 20, 015001 (2008)CrossRefADSGoogle Scholar
  16. [16]
    Z. Q. Li, B. L. Gu, Phys. Rev. B 47, 13611 (1993)CrossRefADSGoogle Scholar
  17. [17]
    J. Guevara, F. Parisi, A. M. Llois, M. Weissmann, Phys. Rev. B 55, 13283 (1997)CrossRefADSGoogle Scholar
  18. [18]
    J. Hong, R. Q. Wu, Phys. Rev. B 70, 060406 (2004)CrossRefADSGoogle Scholar
  19. [19]
    R. Felix-Medina, R. Guirado-Lopez, J. Dorantes-Davila, G. M. Pastor, J. Appl. Phys. 87, 4894 (2000)CrossRefADSGoogle Scholar
  20. [20]
    B. Lazarovits, L. Szunyogh, P. Weinberger, Phys. Rev. B 67, 024415 (2003)CrossRefADSGoogle Scholar
  21. [21]
    H. Ebert, In: H. Dreyssé (Ed.), Electronic Structure and Physical Properties of Solids (Springer, Berlin, 2000) 191CrossRefGoogle Scholar
  22. [22]
    R. Zeller, P. H. Dederichs, B. Újfalussy, L. Szunyogh, P. Weinberger, Phys. Rev. B 52, 8807 (1995)CrossRefADSGoogle Scholar
  23. [23]
    J. Minár, S. Bornemann, O. Šipr, S. Polesya, H. Ebert, Appl. Phys. A-Mater. 82, 139 (2006)CrossRefADSGoogle Scholar
  24. [24]
    S. Pick, V. S. Stepanyuk, A. N. Baranov, W. Hergert, P. Bruno, Phys. Rev. B 68, 104410 (2003)CrossRefADSGoogle Scholar
  25. [25]
    A. B. Shick, A. I. Lichtenstein, J. Phys.-Condens. Mat. 20, 015002 (2008)CrossRefADSGoogle Scholar
  26. [26]
    S. Pick et al., Phys. Rev. B 70, 224419 (2004)CrossRefADSGoogle Scholar
  27. [27]
    R. N. Nogueira, H. M. Petrilli, Phys. Rev. B 60, 4120 (1999)CrossRefADSGoogle Scholar
  28. [28]
    S. Polesya, O. Šipr, S. Bornemann, J. Minár, H. Ebert, Europhys. Lett. 74, 1074 (2006)CrossRefADSGoogle Scholar
  29. [29]
    O. Šipr, S. Polesya, J. Minár, H. Ebert, J. Phys.-Condens. Mat. 19, 446205 (2007)CrossRefGoogle Scholar

Copyright information

© Â© Versita Warsaw and Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • OndÅ™ej Å ipr
    • 1
    Email author
  • Ján Minár
    • 2
  • Hubert Ebert
    • 2
  1. 1.Institute of Physics of the AS CR v. v. i.PragueCzech Republic
  2. 2.Department Chemie und BiochemieUniversität MünchenMünchenGermany

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