Nonlinear Effects in the Dynamic Structure Factor of the Classical Antiferromagnetic Heisenberg Chain in an External Field at Low Temperatures

B. De Raedt, H. De Raedt, J. Fivez

Research output: Contribution to journalArticleAcademic

7 Citations (Scopus)
208 Downloads (Pure)

Abstract

Is is found that nonlinear effects give rise to anomalies in the spectrum of the antiferromagnetic Heisenberg chain in an external field, even at low temperatures. Divergences in the two-magnon density of states are responsible for additional resonances, besides the usual spin-wave peak, in the dynamic structure factor.
Original languageEnglish
Number of pages3
JournalPhysical Review Letters
Volume46
Issue number12
DOIs
Publication statusPublished - 1981

Cite this