Polarization of the spin-S exchange-interaction model

H. H. Chen, Shih-Chuan Gou, Y. C. Chen

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The spin-S exchange interaction model of ferromagnetism is studied by the mean-field approximation. This model has 4S(S+1) order parameters, and has infinitely many ground-state configurations. We define a single polarization parameter to describe the ordering of the system. Thermal variation of the polarization q(T) is determined for various spins. The phase transition is first order (except for S=1/2) with phase transition temperature kTc/Jz=(2S-1)/(4S ln2S), where z is the coordination number, and the discontinuity of q at Tc is qc=(2S-1)/2S.

Original languageEnglish
Pages (from-to)8323-8328
Number of pages6
JournalPhysical Review B
Volume46
Issue number13
DOIs
Publication statusPublished - 1992 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Polarization of the spin-S exchange-interaction model'. Together they form a unique fingerprint.

  • Cite this