Fig. 4: Thermodynamic and temporal characteristics of the current-driven magnon gas.
From: Evidence for spin current driven Bose-Einstein condensation of magnons
a Current dependences of the BLS intensity for the PSW peak and that for the lowest magnon state at fmin, as labeled. The data are normalized by the value at I = 0. Note different vertical scales for the two dependencies. The data were obtained at µ0H0 = 100 mT. b Current dependence of the chemical potential expressed in frequency units. Horizontal dashed line marks the frequency of the lowest-energy magnon state fmin. A vertical dashed line marks the critical current IC, at which the formation of the BEC peak is observed. c Temporal dependence of the BLS intensity at fmin obtained at I = 2 mA and µ0H0 = 100 mT.
