Spin-wave turbulence
| Autor: | Katsuhiro Nakamura, Carson Jeffries, Paul H. Bryant |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
Period-doubling bifurcation
Nuclear and High Energy Physics Materials science Photon Condensed matter physics Magnon Yttrium iron garnet Resonance Atomic and Molecular Physics and Optics chemistry.chemical_compound chemistry Spin wave Excited state Quasiperiodic function Condensed Matter::Strongly Correlated Electrons |
| Zdroj: | Nuclear Physics B - Proceedings Supplements. 2:25-36 |
| ISSN: | 0920-5632 |
| DOI: | 10.1016/0920-5632(87)90006-5 |
| Popis: | A high resolution study is made of spin-wave dynamics above the Suhl threshold in a sphere of yttrium iron garnet driven by microwave ferromagnetic resonance. In different regions of parameter space observed behavior includes: excitation of a single spatial spin-wave mode at threshold; when two modes are excited, low frequency collective oscillations with a period doubling route to chaos; nonperiodic relaxation oscillations when three modes are excited, quasiperiodic route to chaos; abrupt hysteretic onset of wide-band chaos. These results are accounted for in a unified way by numerical iteration of a model: coupled quantum oscillators representing the photons of the cavity and the magnons, including four-magnon scattering processes. |
| Databáze: | OpenAIRE |
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