Hanle magnetoresistance: The role of edge spin accumulation and interfacial spin current

We report the Hanle magnetoresistance (HMR) due to the spin precession of edge spin accumulation and interfacial spin current. Because of spin-orbit coupling (SOC), an electric current is accompanied by a transverse spin current, which builds up the spin accumulation at surfaces of Pt and the spin c...

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Published in:Physical review. B 2016-11, Vol.94 (17), Article 174407
Main Authors: Wu, H., Zhang, X., Wan, C. H., Tao, B. S., Huang, L., Kong, W. J., Han, X. F.
Format: Article
Language:English
Subjects:
Accumulation
Electric currents
Electrical measurement
Magnetoresistance
Magnetoresistivity
Precession
Spin-orbit interactions
Spintronics
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description We report the Hanle magnetoresistance (HMR) due to the spin precession of edge spin accumulation and interfacial spin current. Because of spin-orbit coupling (SOC), an electric current is accompanied by a transverse spin current, which builds up the spin accumulation at surfaces of Pt and the spin current across the YIG/Pt interface. Once a magnetic field is applied, the precession of spins will decrease the edge spin accumulation and interfacial spin current, which leads to an increased resistance of Pt via ISHE. Spin relaxation governs the HMR from edge spin accumulation, while spin diffusion and spin conversion play important roles in the HMR from interfacial spin current. This work provides another method to investigate the spin-orbit coupling by electrical measurement.
doi_str_mv 10.1103/PhysRevB.94.174407
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Accumulation
Electric currents
Electrical measurement
Magnetoresistance
Magnetoresistivity
Precession
Spin-orbit interactions
Spintronics
title Hanle magnetoresistance: The role of edge spin accumulation and interfacial spin current
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