Caramico D'Auria, Alvaro and Esposito, Filippo (2007) Single-ion anisotropy effects on the energy spectra of spin S = 1 Heisenberg ring. [Pubblicazione in rivista scientifica]

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Item Type: Pubblicazione in rivista scientifica
Uncontrolled Keywords: magnetic clusters, Heisenberg model, numerical simulations, low dimensional systems
Date Deposited: 20 Oct 2010 08:34
Last Modified: 30 Apr 2014 19:42


The energy spectra of the quantum spin S = 1 ring are calculated. The numerical exact diagonalization technique exploiting the point group symmetry is applied to the Heisenberg spin Hamiltonian with single ion anisotropy modelling approximately a dodecanuclear nickel cluster. The energy level dependence of the anisotropy parameter D is analyzed and the field dependent level crossing is presented.

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