Thermodynamics of classical frustrated spin chain at the ferromagnet-helimagnet transition point

TL;DR

This paper investigates the low-temperature thermodynamics of a classical frustrated ferromagnetic spin chain at the transition point to a helimagnet, revealing changes in critical behavior and correlation functions.

Contribution

It provides a detailed analysis of the correlation function and susceptibility at the transition point using the transfer-matrix method, highlighting a change in critical exponent.

Findings

Susceptibility critical exponent changes from 2 to 4/3 at transition

Correlation function behavior characterized at the transition point

Thermodynamic properties analyzed using transfer-matrix method

Abstract

Low-temperature thermodynamics of the classical frustrated ferromagnetic spin chain is studied. Using transfer-matrix method we found the behavior of the correlation function and zero-field susceptibility at the ferromagnetic-helical transition point. It is shown that the critical exponent for the susceptibility is changed from 2 to 4/3 at the transition point.