Intermittency in Magnon Systems near the Onset of the Second-Order SuhI Instability

概要

論文の詳細を見る
Intermittent behavior in magnon systems is studied through ferromagnetic resonance experiments using a sphere of yttrium-iron-garnet (YIG) under X-band microwave pumping. Intermittency is observed near the microwave power of the onset of the second-order SuhI instability. Based on Kullback-Leibler information theory we considered two models of the laminar length distribution: an exponential model and a power law model. At low power, the distribution follows an exponential model, indicating a predominantly Poisson process, transitioning to a power law model at higher power, indicating chaotic dynamics. This transition suggests that an orderly state arises due to magnon-magnon interaction from the initially disordered state (random process) with increasing microwave power.
社団法人日本物理学会の論文
2003-11-15