Magnetic properties of the spin-1/2 Ising-Heisenberg diamond chain with the four-spin interaction

Abstract

A symmetric spin-1/2 Ising-Heisenberg diamond chain with the Ising four-spin interaction is exactly solved by means of the generalized decoration-iteration mapping transformation. The ground state, the magnetization process and thermodynamics are particularly examined for the case of antiferromagnetic pair interactions (Ising and isotropic Heisenberg ones). It is shown that an interplay between pair interactions, the four-spin interaction and the external magnetic field gives rise to several quantum ground states with entangled spin states in addition to some semi-classically ordered ones. Besides, the temperature dependence of the magnetic susceptibility multiplied by the temperature is studied and the interesting triple-peak specific heat curve is also detected when considering the zero-field region rather close to the triple point, where three different ground states coexist.

10 pages, 5 figures, submitted to Phys. Status Solidi B. arXiv admin note: text overlap with arXiv:0903.4566, arXiv:0909.4191, arXiv:cond-mat/0603344, arXiv:0806.2566 by other authors

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Cited by in corpus (7)

• Magnetization plateaus of an exactly solvable spin-1 Ising-Heisenberg diamond chain
• Exactly solved mixed spin-(1,1/2) Ising-Heisenberg distorted diamond chain
• Local distributions of the 1D dilute Ising model
• Residual entropy of the dilute Ising chain in a magnetic field
• Magnetization plateaus and enhanced magnetocaloric effect of a spin-1/2 Ising-Heisenberg and Heisenberg double sawtooth ladder with four-spin interaction
• Enhanced magnetocaloric effect in a mixed spin-(1/2, 1) Ising-Heisenberg two-leg ladder with strong-rung interaction
• Spin-1/2 Ising-Heisenberg distorted diamond chain with antiferromagnetic Ising and ferromagnetic Heisenberg interactions