Fig. 5
From: Chemical potential of quasi-equilibrium magnon gas driven by pure spin current

Dependence on the magnetic field. Static-field dependences of d(μ/h)/dI, the efficiency of spin current-driven chemical potential variation in frequency units (point-down triangles), and of J C, the critical current density in Pt at which the chemical potential is expected to reach the energy of the lowest magnon state (point-up triangles)