Abstract
The coupling between the longitudinal and transverse fluctuations in a spin s ferromagnet becomes significant above a crossover temperature T approximately=Tc/s. This coupling produces a splitting of the spin-wave resonance near the energy zJs, where z is the coordination number and J the coupling constant. The authors calculate the transverse mode frequencies and propose an experiment to detect the longitudinal fluctuations.
| Original language | English |
|---|---|
| Article number | 026 |
| Pages (from-to) | 8313-8318 |
| Number of pages | 6 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 3 |
| Issue number | 42 |
| DOIs | |
| State | Published - 1991 |