Ground state and thermodynamic properties of spin-1/2 isosceles Heisenberg triangles for V${}_6$-like magnetic molecules

Abstract

The spin-1/2 Hamiltonian for two coupled isosceles Heisenberg triangles, which is well suited for describing the V${}_6$-type magnetic molecules, is studied by exact diagonalization. The quantum phase transition diagram, at zero temperature, is obtained as a function of the theoretical parameters. The zero temperature magnetization is also obtained as a function of the external magnetic field. The thermodynamic behavior of the magnetization, entropy, susceptibility, and specific heat, as a function of temperature, are also computed and the corresponding magnetocaloric effect analyzed for various values of the Hamiltonian parameters.

References in corpus (4)

• Geometric frustration in the class of exactly solvable Ising-Heisenberg diamond chains
• Thermodynamic properties of a tetramer ferro-ferro-antiferro-antiferromagnetic Ising-Heisenberg bond alternating chain as a model system for Cu(3-Clpy)${}_2$(N${}_3$)${}_2$
• Magnetocaloric properties of V6 molecular magnet
• Phase transitions of geometrically frustrated mixed spin-1/2 and spin-1 Ising-Heisenberg model on diamond-like decorated planar lattices

Cited by in corpus (5)

• Study of the ground state and thermodynamic properties of Cu5-NIPA-like molecular nanomagnets
• Magnetocaloric effect in ${\mathrm{Cu}}_3$-type compounds using the Heisenberg antiferromagnetic model in a triangular ring
• Coexistence of spontaneous dimerization and magnetic order in a transverse-field Ising ladder with four-spin interactions
• Thermodynamic and magnetocaloric properties of a triangular spin-1/2 cluster with Dzyaloshinskii-Moriya interaction
• Quantum machines using ${\mathrm{Cu}}_3$-like compounds modeled by Heisenberg antiferromagnetic in a triangular ring