Relation between unidirectional spin Hall magnetoresistance and spin current-driven magnon generation
arXiv:1806.06581 · doi:10.1063/1.5044737
Abstract
We perform electronic measurements of unidirectional spin Hall magnetoresistance (USMR) in a Permalloy/Pt bilayer, in conjunction with magneto-optical Brillouin light spectroscopy of spin current-driven magnon population. We show that the current dependence of USMR closely follows the dipolar magnon density, and that both dependencies exhibit the same scaling over a large temperature range of 80-400 K. These findings demonstrate a close relationship between spin current-driven magnon generation and USMR, and indicate that the latter is likely dominated by the dipolar magnons.
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Cited by in corpus (12)
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- Large Unidirectional Magnetoresistance in Metallic Heterostructures in the Spin Transfer Torque Regime
- Direct observation of current-induced nonlinear spin torque in Pt-Py bilayers
- Nonlinear longitudinal and transverse magnetoresistances due to current-induced magnon creation-annihilation processes
- Estimation of spin-orbit torques in the presence of current-induced magnon creation and annihilation
- Disentangle magnon magnetoresistance from anisotropic and spin Hall magnetoresistance in NiFe/Pt bilayers
- Non-local magnon transconductance in extended magnetic insulating films.\\ Part I: spin diode effect
- Fluctuation theorem for spin transport at insulating ferromagnetic junctions
- Roles of Electron-Magnon Cross Diffusion in Unidirectional Magnetoresistance of Metallic Magnetic Bilayers