Ground State Properties of one-dimensional Antiferromagnetic Spin-1 Chain with Single-ion Anisotropy

Details Ground State Properties of one-dimensional Antiferromagnetic Spin-1 Chain with Single-ion Anisotropy Ground State Properties of one-dimensional Antiferromagnetic Spin-1 Chain with Single-ion Anisotropy

2005-01-06

arxiv.org/abs/cond-mat/0501111v2

Chinese Phys. Lett. Vol.22 (2005) 2382

Physics

Condensed Matter

Statistical Mechanics

RevTex, 9 pages, 7 figures: one reference added

Scientific paper

10.1088/0256-307X/22/9/067

In this study, we have investigated ground state properties of one-dimensional antiferromagnetic spin-1 chain with single-ion anisotropy at very low temperatures using the Transfer Matrix method. Magnetic plateaus, phase diagram, specific heat, susceptibility of the spin chain have been evaluated numerically from the free energy. Results are in good agreement with the experimental data for the spin-1 compounds [Ni$_2$(Medpt)$_2$($\mu$-ox)(H$_2$O)$_2$](ClO$_4$)$_2$2H$_2$O, [Ni$_{2}$(Medpt)$_{2}$($\mu$-ox)($\mu$-N$_{3}$)](ClO$_{4}$)0.5H$_{2}$O, Ni(C$_2$H$_8$N$_2$)Ni(CN)$_4$ and Ni(C$_{10}$H$_8$N$_2$)$_2$Ni(CN)$_4$.H$_2$O. However, spin-Peierls transition have not been observed in the temperature dependence of specific heat and magnetic susceptibility.

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