Static properties of the one-dimensional planar ferromagnet in an external field

A. Patkós, P. Ruján

Research output: Article

19 Citations (Scopus)

Abstract

The thermodynamic functions and the correlation length of the classical one-dimensional X Y model in an external field are calculated by the numerical integration of the transfer matrix equation in both ferro- and antiferromagnetic cases. We show that for a finite but weak magnetic field the low temperature structure of the ferromagnetic partition function consists of a spin-wave part and a factor corresponding to the interaction of topological excitations. The contributions of the soliton like topological objects to the static properties are calculated through a systematic perturbative method. Finally we discuss in detail the regions of validity of different analytical approaches by comparing them with our exact numerical solution.

Original languageEnglish
Pages (from-to)163-171
Number of pages9
JournalZeitschrift für Physik B Condensed Matter and Quanta
Volume33
Issue number2
DOIs
Publication statusPublished - jún. 1979

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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