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.

Single-ion anisotropy effects on the energy spectra of spin S = 1 Heisenberg ring

CARAMICO D'AURIA, ALVARO;ESPOSITO, FILIPPO;
2007

Abstract

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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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/301728
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