Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces

Abstract

We report a systematic study on Edelstein magnetoresistance (Edelstein MR) in Co25Fe75/Cu/Bi2O3 heterostructures with a strong spin-orbit interaction at the Cu/Bi2O3 interface. We succeed in observing a significant dependence of the Edelstein MR on both Cu layer thickness and temperature, and also develop a general analytical model considering distinct bulk and interface contributions on spin relaxation. Our analysis, based on the above model, quantitatively illustrates a unique property of the spin transport near the Rashba interface, revealing a prominent role of the spin relaxation process by determining the ratios of the spin relaxation inside and outside the interface. We further find the characteristic spin transport is unaffected by temperature. Our results provide an essential tool for exploring the transport in a system with spin-momentum-locked two-dimensional states.

arXiv comment18 pages, 5 figures, Accepted in Phys. Rev. B Rapid Communications

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Cited by in corpus (17)

• Quantum Materials for Spin and Charge Conversion
• Non-trivial charge-to-spin conversion in ferromagnetic metal/Cu/Al2O3 by orbital transport
• Spintronic Sources of Ultrashort Terahertz Electromagnetic Pulses
• Origins of the unidirectional spin Hall magnetoresistance in metallic bilayers
• Inverse Edelstein effect induced by magnon - phonon coupling
• Clear variation of spin splitting by changing electron distribution at non-magnetic metal/Bi2O3 interfaces
• Phenomenological model for the direct and inverse Edelstein effects
• Anomalous spin-orbit field via Rashba-Edelstein effect at W/Pt interface
• Spin-current-related magnetoresistance in epitaxial Pt/Co bilayers in the presence of spin Hall effect and Rashba-Edelstein effect
• Nonlocal magnetolectric effects in diffusive conductors with spatially inhomogeneous spin-orbit coupling
• Spin accumulation at nonmagnetic interface induced by direct Rashba Edelstein effect
• Evidence for spin swapping from modulation of transverse resistance in magnetic heterostructures with Rashba interface
• Violation of local reciprocity in charge-orbital interconversion
• Microscopic theory of Rashba-Edelstein magnetoresistance
• Quantification of interfacial spin-charge conversion in metal/insulator hybrid structures by generalized boundary conditions
• Enhanced Edelstein effect and interdimensional effects in an electron gas with Rashba spin-orbit coupling interface
• Observation of spin-orbit magnetoresistance in CoFeB/heavy metal/MgO with existence of both spin Hall effect and Edelstein effect