Spin-orbit torque generation in bilayers composed of CoFeB and epitaxial SrIrO grown on an orthorhombic DyScO substrate
arXiv:2306.02567 · doi:10.1063/5.0094935
Abstract
We report on the highly efficient spin-orbit torque (SOT) generation in epitaxial SrIrO(SIO), which is grown on an orthorhombic DyScO(110) substrate. By conducting harmonic Hall measurement in CoFeB (CoFeB)/SIO bilayers, we characterize two kinds of the SOTs, i.e., dampinglike (DL) and fieldlike ones to find that the former is much larger than the latter. By comparison with the Pt control sample with the same CoFeB thickness, the observed DL SOT efficiency of SIO (0.32) is three times higher than that of Pt (0.093). The is nearly constant as a function of the CoFeB thickness, suggesting that the SIO plays a crucial role in the large SOT generation. These results on the CoFeB/SIO bilayers highlight that the epitaxial SIO is promising for low-current and reliable spin-orbit torque-controlled devices.
arXiv commentarXiv admin note: text overlap with arXiv:2305.17887
References in corpus (27)
- Spin torque switching with the giant spin Hall effect of tantalum
- Spin Caloritronics
- Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
- Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
- Spin transfer torque devices utilizing the giant spin Hall effect of tungsten
- Symmetry and magnitude of spin-orbit torques in ferromagnetic heterostructures
- Layer thickness dependence of the current induced effective field vector in Ta|CoFeB|MgO
- Role of transparency of platinum-ferromagnet interface in determining intrinsic magnitude of spin Hall effect
- Dependence of the Efficiency of Spin Hall Torque on the Transparency of Pt-Ferromagnetic Layer Interfaces
- Spin torque study of the spin Hall conductivity and spin diffusion length in platinum thin films with varying resistivity
- Interplay of spin-orbit torque and thermoelectric effects in ferromagnet/normal metal bilayers
- Matching domain wall configuration and spin-orbit torques for very efficient domain-wall motion
- Interplay of Spin-Orbit Interactions, Dimensionality, and Octahedral Rotations in Semimetallic SrIrO
- Comparison of spin-orbit torques and spin pumping across NiFe/Pt and NiFe/Cu/Pt interfaces
- Engineering spin-orbital magnetic insulator by tailoring superlattices
- Metal insulator transitions in perovskite SrIrO3 thin films
- Anisotropic spin-orbit torque generation in epitaxial SrIrO3 by symmetry design
- Spin-orbit semimetal SrIrO in the two-dimensional limit
- Theory of Large Intrinsic Spin Hall Effect in Iridate Semimetals
- Role of Dirac nodal lines and strain on the high spin Hall conductivity of epitaxial IrO2 thin films
- Rational design principles for giant spin Hall effect in 5d-transition metal oxides
- Spin-orbit torque generation in NiFe/IrO2 bilayers
- Structural properties and anisotropic electronic transport in SrIrO3 films
- Observation of Nonlinear Spin-Charge Conversion in the Thin Film of Nominally Centrosymmetric Dirac Semimetal SrIrO3 at Room Temperature
- Magnetoresistance generated from charge-spin conversion by anomalous Hall effect in metallic ferromagnetic/nonmagnetic bilayers
- Stacking-order effect on spin-orbit torque, spin-Hall magnetoresistance, and magnetic anisotropy in NiFe-IrO bilayers
- Magnetotransport of SrIrO3 films on (110) DyScO3