QUANTUM TUNNELLING OF A HIGH SPIN

IN SINGLE-MOLECULE MAGNETS: SPIN PARITY EFFECTS

 

M. A. Falloul, M. El Hafidi*

Laboratoire “Modélisation & Instrumentation”

Faculté des Sciences Ben M’sik - Département de Physique

Université Hassan II Mohammedia-Casablanca

B.P: 7955 Sidi Othmane - Casablanca Morocco

* Corresponding author. E-mail: elhafidimohamed@menara.ma

Received: 17 May 2010; revised version accepted: 19 June 2010

 

Abstract

     A pure quantum model of molecular magnets is presented. Energy levels and corresponding states are determined by numerical Diagonalization of the (2S+1)(2S+1) spin Hamiltonian and quenching points have been derived. The spin parity effects are analyzed for a biaxial system. The magnetization steps have been shown in agreement with many well known experimental data.

 

Keywords: Macroscopic quantum tunnelling; Single Molecule magnets spin parity; biaxial system; Numerical diagonalization.


© 2015