Exactly solvable Ising--Heisenberg chain with triangular XXZ-Heisenberg plaquettes

Abstract

A mixed Ising-Heisenberg spin system consisting of triangular XXZ-Heisenberg spin clusters assembled into a chain by alternating with Ising spins interacting to all three spins in the triangle is considered. The exact solution of the model is given in terms of the generalized decoration--iteration map and within the transfer-matrix technique. Exact expressions for thermodynamic functions are derived. Ground state phase diagrams, thermodynamic and magnetic properties of the system are examined.

16 pages, 12 figures

References in corpus (3)

• Spin-Electric Coupling in Molecular Magnets
• Magnetization plateaus in frustrated antiferromagnetic quantum spin models
• Thermodynamic properties of a tetramer ferro-ferro-antiferro-antiferromagnetic Ising-Heisenberg bond alternating chain as a model system for Cu(3-Clpy)${}_2$(N${}_3$)${}_2$