KINETIC INSTABILITY AND BOSE-CONDENSATION OF NONEQUILIBRIUM MAGNONS

Authors
MELKOV GA SAFONOV VL TARANENKO AY SHOLOM SV
Citation
Ga. Melkov et al., KINETIC INSTABILITY AND BOSE-CONDENSATION OF NONEQUILIBRIUM MAGNONS, Journal of magnetism and magnetic materials, 132(1-3), 1994, pp. 180-184
Citations number
22
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
132
Issue
1-3
Year of publication
1994
Pages
180 - 184
Database
ISI
SICI code
0304-8853(1994)132:1-3<180:KIABON>2.0.ZU;2-J
Abstract
Several models in which a microwave radiation of the frequency omega1 arises from the bottom of spin-wave spectrum under condition of parame tric resonance of magnons of the frequency omega(p)/2 are considered. Weak radiation of the frequency omega2 = omega(p) + omega1 has been de tected in thin ferrite film. This radiation can be treated in favour o f both the theory of kinetic instability and the thermodynamic theory of parametric resonance of magnons. Possibility of Bose condensation o f nonequilibrium magnons is discussed.