Low-temperature excitations in random two-dimensional antiferromagnets

Michael Thorpe, R. Alben

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Abstract

A numerical method involving the time integration of equations of motion is developed for calculating response functions of antiferromagnets. The method is particularly useful in calculating dynamic response functions S(k, omega ) and can also be used to obtain densities of states. The technique is applied to the two-dimensional random antiferromagnets Rb2Mn0.5Ni 0.5F4 and Rb2MncZn 1-cF4. In the former case, good agreement is found with the recently measured S(k, omega ) and in the latter some interesting clustering effects that should be accessible experimentally are found.

Original languageEnglish (US)
Article number015
Pages (from-to)2555-2568
Number of pages14
JournalJournal of Physics C: Solid State Physics
Volume9
Issue number13
DOIs
Publication statusPublished - 1976
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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