HEISENBERG ANTIFERROMAGNETIC CHAIN of SPINS=1

O. Golinelli, Th. Jolicoeur and R. Lacaze
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O. Golinelli: Service de Physique Théorique, C.E. Saclay F-91191 Gif-sur-Yvette CEDEX, France
Th. Jolicoeur: Service de Physique Théorique, C.E. Saclay F-91191 Gif-sur-Yvette CEDEX, France
R. Lacaze: Service de Physique Théorique, C.E. Saclay F-91191 Gif-sur-Yvette CEDEX, France

International Journal of Modern Physics C (IJMPC), 1994, vol. 05, issue 02, 259-261

Abstract: The Heisenberg antiferromagnetic chain of spin 1 with the most general single ion anisotropy is numerically analyzed. Chains of length up to 22 sites are studied by a Lanczös method and up to 32 sites with a quantum Monte Carlo. Gaps, magnetic excitations, dynamical properties and magnetic field behaviour are obtained. The recent neutron scattering experiments on the quasi one-dimensional antiferromagnet NENP are fully explained by our results.

Date: 1994
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DOI: 10.1142/S0129183194000271

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