Anomalous Hall-like transverse magnetoresistance in Au thin films on Y${}_3$Fe${}_5$O${}_{12}$

Abstract

Anomalous Hall-like signals in platinum in contact with magnetic insulators are common observations that could be explained by either proximity magnetization or spin Hall magnetoresistance. In this work, longitudinal and transverse magnetoresistances are measured in a pure gold thin film on the ferrimagnetic insulator Y${}_3$Fe${}_5$O${}_{12}$ (Yttrium Iron Garnet, YIG). We show that both the longitudinal and transverse magnetoresistances have quantitatively consistent scaling in YIG/Au and in a YIG/Pt reference system when applying the Spin Hall magnetoresistance framework. No contribution of an anomalous Hall effect due to the magnetic proximity effect is evident.

7 pages, 2 figures and Supplementary Information

References in corpus (14)

• Spin Seebeck insulator
• Theory of spin Hall magnetoresistance
• Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
• Tuning the spin Hall effect of Pt from the moderately dirty to the superclean regime
• Purely Antiferromagnetic Magnetoelectric Random Access Memory
• Temperature dependence of spin diffusion length and spin Hall angle in Au and Pt
• Observation of the spin Nernst effect
• Investigation of induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers
• Determination of spin Hall effect and spin diffusion length of Pt from self-consistent fitting of damping enhancement and inverse spin-orbit torque measurements
• Anomalous Hall effect in YIG$|$Pt bilayers
• Competing effects at Pt/YIG interfaces: spin Hall magnetoresistance, magnon excitations and magnetic frustration
• Spin diffusion length of Permalloy using spin absorption in lateral spin valves
• Modulation of pure spin currents with a ferromagnetic insulator
• Estimating spin diffusion length and spin Hall angle from spin pumping-induced inverse spin Hall voltages

Cited by in corpus (9)

• Anisotropic Magnetoresistance and Nontrivial Spin Hall Magnetoresistance in Pt/$\alpha$-Fe${}_2$O${}_3$ Bilayers
• Strong interfacial exchange field in a heavy metal/ferromagnetic insulator system determined by spin Hall magnetoresistance
• Spin-Hall magnetoresistance in a low-dimensional magnetic insulator
• Differences in the magnon diffusion length for electrically and thermally driven magnon currents in Y${}_3$Fe${}_5$O${}_{12}$
• Experimental Evidence of Non-Negligible Imaginary Part of Spin Mixing Conductance and Its Impact on Magnetization Dynamics in Heavy-Metal|Ferromagnet Bilayers
• Realisation of de Gennes${}^{\prime }$ Absolute Superconducting Switch with a Heavy Metal Interface
• Determining complex spin mixing conductance and spin diffusion length from spin pumping experiments in magnetic insulator/heavy metal bilayers
• Spin Hall magnetoresistance in Pt/Y${}_3$Fe${}_5$O${}_{12}$ bilayers grown on Si and Gd${}_3$Ga${}_5$O${}_{12}$ substrates
• Effect of interface quality on spin Hall magnetoresistance in Pt/MgFe${}_2$O${}_4$ bilayers