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 language | English (US) |
|---|---|
| Pages (from-to) | 814-817 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 27 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1971 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
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