کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
973618 | 1480120 | 2016 | 15 صفحه PDF | دانلود رایگان |
• We consider the spin-1 Ising–Heisenberg model on a diamond chain.
• Exact ground-state phase diagrams are derived.
• The existence of the magnetic and quadrupole moments plateaus is shown.
• Distributions of the Yang–Lee and Fisher zeros have been studied.
We study the properties of the generalized spin-1 Ising–Heisenberg model on a diamond chain, which can be considered as a theoretical model for the homometallic magnetic complex [Ni3(C4H2O4)2−(μ3−OH)2(H2O)4]n⋅(2H2O)n. The model possesses a large variety of ground-state phases due to the presence of biquadratic and single-ion anisotropy parameters. Magnetization and quadrupole moment plateaus are observed at one- and two-thirds of the saturation value. The distributions of Yang–Lee and Fisher zeros are studied numerically for a variety of values of the model parameters. The usual value σ=−12 alongside an unusual value σ=−23 is determined for the Yang–Lee edge singularity exponents.
Journal: Physica A: Statistical Mechanics and its Applications - Volume 453, 1 July 2016, Pages 116–130