Europhys. Lett.
Volume 76, Number 6, December 2006
Page(s) 1088 - 1094
Section Atomic and molecular physics
Published online 01 December 2006
Europhys. Lett., 76 (6), pp. 1088-1094 (2006)
DOI: 10.1209/epl/i2006-10373-4

Theoretical study of the effect of temperature on the magnetism of transition metal clusters

A. N. Andriotis1, Z. G. Fthenakis1, 2 and M. Menon3, 4

1  Institute of Electronic Structure and Laser, FORTH - P.O. Box 1527 71110 Heraklio, Crete, Greece
2  Department of Physics, University of Crete - P.O. Box 2208 71003 Heraklio, Crete, Greece
3  Department of Physics and Astronomy, University of Kentucky Lexington, KY 40506-0055, USA
4  Center for Computational Sciences, University of Kentucky Lexington, KY 40506-0045, USA

received 29 May 2006; accepted in final form 17 October 2006
published online 1 December 2006

The temperature effects on the magnetic properties of transition metal clusters are investigated by computer simulations which combine the classical potential approximation with the generalization of our recently proposed tight-binding molecular-dynamics method that includes explicit incorporation of spin-orbit interactions and spin fluctuations. The efficacy of this new method is demonstrated by application to small and intermediate size Nin-clusters ($n \le
201$) for which experimental data are available for comparison. The results obtained are in good agreement with the recent experimental findings.

36.40.Mr - Spectroscopy and geometrical structure of clusters.
64.70.Nd - Structural transitions in nanoscale materials.
82.30.Nr - Association, addition, insertion, cluster formation.

© EDP Sciences 2006