Thermodynamic properties of a tetramer ferro-ferro-antiferro-antiferromagnetic Ising-Heisenberg bond alternating chain as a model system for Cu(3-Clpy)$_2$(N$_3$)$_2$

TL;DR

This paper investigates the thermodynamic properties of a specific quantum spin chain model using exact methods, providing detailed results for magnetization, susceptibility, and specific heat, and compares these with experimental data for a related compound.

Contribution

It introduces an exact mapping transformation technique to analyze a complex Ising-Heisenberg spin chain, offering new insights into its thermodynamic behavior and experimental relevance.

Findings

Exact magnetization, susceptibility, and specific heat results obtained.

Model results agree with experimental data for Cu(3-Clpy)$_2$(N$_3$)$_2$.

Provides detailed analysis of magnetic field effects.

Abstract

Thermodynamic properties of a tetramer ferro-ferro-antiferro-antiferromagnetic Ising-Heisenberg bond alternating chain are investigated by the use of an exact mapping transformation technique. Exact results for the magnetization, susceptibility and specific heat in the zero as well as nonzero magnetic field are presented and discussed in detail. The results obtained from the mapping are compared with the relevant experimental data of Cu(3-Clpy)$_2$(N$_3$)$_2$ (3-Clpy=3-Chloropyridine).