Softening and broadening of the zone boundary magnons in Pr0.63Sr0.37MnO3

H. Y. Hwang, P. Dai, S. W. Cheong, G. Aeppli, D. A. Tennant, H. A. Mook

Research output: Contribution to journalArticlepeer-review

125 Scopus citations


We have studied the spin dynamics in Pr0.63Sr0.37MnO3 above and below the Curie temperature TC = 301 K. Three distinct new features have been observed: a softening of the magnon dispersion at the zone boundary for T < TC, significant broadening of the zone boundary magnons as T → TC, and no evidence for residual spin-wave-like excitations just above TC. The results are inconsistent with double exchange models that have been successfully applied to higher TC samples, indicating an evolution of the spin system with decreasing TC.

Original languageEnglish (US)
Pages (from-to)1316-1319
Number of pages4
JournalPhysical review letters
Issue number6
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


Dive into the research topics of 'Softening and broadening of the zone boundary magnons in Pr0.63Sr0.37MnO3'. Together they form a unique fingerprint.

Cite this