Energy Width of Spin Waves in the Heisenberg Ferromagnet
Loading...
Related Collections
Degree type
Discipline
Subject
Physics
Funder
Grant number
License
Copyright date
Distributor
Author
Contributor
Abstract
A calculation of the energy width of spin waves whose energy is small compared to kT in a Heisenberg ferromagnet is presented. Full account is taken of all two-particle processes. For 2JS/kT≫1 and 2JSa2λ2/kT≪1, the energy width Δωλ of a spin wave of wave number λ is Δωλ~λ4T2[A+Bln(kT/2JSa2λ2)+Cln2(kT/2JSa2λ2)]. The disagreement with some previous treatments is explained physically by their neglect of two many-body effects.
Advisor
Date Range for Data Collection (Start Date)
Date Range for Data Collection (End Date)
Digital Object Identifier
Series name and number
Publication date
1968-11-10
Journal title
Physical Review
Volume number
Issue number
Publisher
Publisher DOI
Comments
An Erratum for this article, published at Phys. Rev. 184, 606 (1969), is included as an additional file.