The dynamics of very dilute Heisenberg systems

A. R. McGurn, Michael Thorpe

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A study of the zero-temperature two-dimensional ferromagnetic and antiferromagnetic densities of states for Heisenberg spin systems which are randomly diluted is made using the computer simulation of Alben and Thorpe (1976). The prominent features of these systems at <or approximately=25% magnetic concentration are shown to be accounted for by clusters of up to five spins. As the Alben-Thorpe simulation relies on linearised equations of motion, an attempt is made to understand the limitations of this procedure at concentrations where doublet and triplet scattering is dominant. For ferromagnets the linearised equations of motion are exact, whilst for antiferromagnets they become exact as S to infinity but lead to considerable errors for S=5/2.

Original languageEnglish (US)
Article number022
Pages (from-to)2363-2371
Number of pages9
JournalJournal of Physics C: Solid State Physics
Volume12
Issue number12
DOIs
StatePublished - 1979
Externally publishedYes

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Equations of motion
equations of motion
infinity
computerized simulation
Scattering
Computer simulation
scattering
simulation
Temperature
temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

The dynamics of very dilute Heisenberg systems. / McGurn, A. R.; Thorpe, Michael.

In: Journal of Physics C: Solid State Physics, Vol. 12, No. 12, 022, 1979, p. 2363-2371.

Research output: Contribution to journalArticle

McGurn, A. R. ; Thorpe, Michael. / The dynamics of very dilute Heisenberg systems. In: Journal of Physics C: Solid State Physics. 1979 ; Vol. 12, No. 12. pp. 2363-2371.
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