Raman scattering by four magnons in NiO and KNiF3

R. E. Dietz, W. F. Brinkman, A. E. Meixner, H. J. Guggenheim

Research output: Contribution to journalArticle

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Abstract

We have observed 3+ excitations by Raman scattering in KNiF3 at 1270 cm-1 (17.9J), and in NiO at 2800 cm-1 (18.9J). These excitations are identified as four-magnon excitations by agreement of the peak frequencies with calculated values, and in the case of NiO by the temperature shift. Scattering by four magnons is the highest-order nonresonant Raman scattering yet observed. The excitation of four magnons is interpreted in terms of excited-state propagation effects.

Original languageEnglish (US)
Pages (from-to)814-817
Number of pages4
JournalPhysical review letters
Volume27
Issue number12
DOIs
StatePublished - Jan 1 1971
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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