Answers are grounded in this paper and cite their sources.
We investigate magnetization dynamics in a spin-Hall oscillator using a direct current measurement as well as conventional microwave spectrum analysis. When the current applies an anti-damping spin-transfer torque, we observe a change in resistance which we ascribe mainly to the excitation of incoherent exchange magnons. A simple model is developed based on the reduction of the effective saturation magnetization, quantitatively explaining the data. The observed phenomena highlight the importance of exchange magnons on the operation of spin-Hall oscillators.
No takes yet. Share an insight, caveat, or question.
Langenfeld et al. (2016) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: