Non-trivial charge-to-spin conversion in ferromagnetic metal/Cu/Al2O3 by orbital transport
arXiv:2002.00596 · doi:10.1103/PhysRevB.103.L020407
Abstract
Efficient spin/charge interconversion is desired to develop innovative spin-based devices. So far, the interconversion has been performed by using heavy atomic elements, strong spin-orbit interaction of which realizes the interconversion through the spin Hall effect and the Edelstein effect. We demonstrate highly efficient charge-to-spin conversion in a ferromagnetic metal/Cu/Al2O3 trilayers, which do not contain any heavy element. The resulting spin torque efficiency is higher than those of conventional spin Hall and Rashba systems consisting of heavy elements such as Pt and Bi. Our experimental results qualitatively deviate from typical behaviors arising from spin transport. However, they are surprisingly consistent with the behaviors arising from the orbital transport. Our results thus demonstrate a new direction for efficient charge-to-spin conversion through the orbital transport.
References in corpus (37)
- Spin torque switching with the giant spin Hall effect of tantalum
- Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
- Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
- Spin transfer torque devices utilizing the giant spin Hall effect of tungsten
- Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
- Role of transparency of platinum-ferromagnet interface in determining intrinsic magnitude of spin Hall effect
- Detection and quantification of inverse spin Hall effect from spin pumping in permalloy/normal metal bilayers
- Dependence of the Efficiency of Spin Hall Torque on the Transparency of Pt-Ferromagnetic Layer Interfaces
- Room-temperature perpendicular magnetization switching through giant spin-orbit torque from sputtered BixSe(1-x) topological insulator material
- Intrinsic spin Hall effect in platinum metal
- Intrinsic Spin and Orbital Hall Effects from Orbital Texture
- Ultra-low magnetic damping of a metallic ferromagnet
- Giant Orbital Hall Effect in Transition Metals: Origin of Large Spin and Anomalous Hall Effects
- Spin Hall magnetoresistance in metallic bilayers
- Gigantic intrinsic orbital Hall effects in weakly spin-orbit coupled metals
- Spin-orbit driven ferromagnetic resonance: A nanoscale magnetic characterisation technique
- Orbital-Angular-Momentum Based Origin of Rashba-Type Surface Band Splitting
- Orbital Torque: Torque Generation by Orbital Current Injection
- First-principles study of magnetization relaxation enhancement and spin-transfer in thin magnetic films
- On the line shape of the electrically detected ferromagnetic resonance
- Effective spin-mixing conductance of heavy-metal-ferromagnet interfaces
- Theory of Current-Induced Angular Momentum Transfer Dynamics in Spin-Orbit Coupled Systems
- Rashba-Edelstein Magnetoresistance in Metallic Heterostructure
- Magnetoresistance Anisotropy of Polycrystalline Cobalt Films: Geometrical-Size- and Domain-Effects
- Intrinsic spin currents in ferromagnets
- Detecting Chiral Orbital Angular Momentum by Circular Dichroism ARPES
- Anomalous temperature dependence of current induced torques in CoFeB|MgO heterostructures with Ta based underlayers
- Microscopic Theory of Rashba Interaction in Magnetic Metal
- Giant Intrinsic Spin Hall Effect in WTa and other A15 Superconductors
- Spin and Orbital Angular Momentum Structures of Cu(111) and Au(111) Surface States
- Intrinsic spin-orbit torque arising from Berry curvature in metallic-magnet/Cu-oxide interface
- Experimental observation of spin to charge current conversion at non-magnetic metal/Bi2O3 interfaces
- Inverse Edelstein effect induced by magnon - phonon coupling
- Transverse and Longitudinal Spin-Torque Ferromagnetic Resonance for Improved Measurements of Spin-Orbit Torques
- Enhancement of spin transparency by interfacial alloying
- Clear variation of spin splitting by changing electron distribution at non-magnetic metal/Bi2O3 interfaces
- Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces
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- Observation of the orbital Hall effect in a light metal Ti
- Orbitronics: Orbital Currents in Solids
- Efficient conversion of orbital Hall current to spin current for spin-orbit torque switching
- Observation of long-range orbital transport and giant orbital torque
- Giant orbital Hall effect and orbital-to-spin conversion in 3d, 5d, and 4f metallic heterostructures
- Observation of the Orbital Rashba-Edelstein Magnetoresistance
- Magneto-Optical Detection of the Orbital Hall Effect in Chromium
- Disentangling orbital and valley Hall effects in bilayers of transition metal dichalcogenides
- Orbital Hall effect as an alternative to valley Hall effect in gapped graphene
- Orbital Rashba effect in surface oxidized Cu film
- Time-domain observation of ballistic orbital-angular-momentum currents with giant relaxation length in tungsten
- Detection of long-range orbital-Hall torques
- Orbital Hanle Magnetoresistance in a 3d Transition Metal
- Orbital Torque in Rare-Earth Transition-Metal Ferrimagnets
- Generation of out-of-plane polarized spin current by spin swapping
- Quantitative comparison of electrically induced spin and orbital polarizations in heavy-metal/3d-metal bilayers
- Dominance of extrinsic scattering mechanisms in the orbital Hall effect: graphene, transition metal dichalcogenides and topological antiferromagnets
- Orbital angular momentum of Bloch electrons: equilibrium formulation, magneto-electric phenomena, and the orbital Hall effect
- Unidirectional orbital magnetoresistance in light metal/ferromagnet bilayers
- Exploring orbital-charge conversion mediated by interfaces with copper through spin-orbital pumping
- Giant efficiency of long-range orbital torque in Co/Nb bilayers
- Orbital Pumping Incorporating Both Orbital Angular Momentum and Position
- Role of Disorder in the Intrinsic Orbital Hall Effect
- Bulk and Interface Effects Based on Rashba-Like States in Ti and Ru Nanoscale-Thick Films: Implications for Orbital-Charge Conversion in Spintronic Devices
- Large Chiral Orbital Texture and Orbital Edelstein Effect in Co/Al Heterostructure
- Mitigation of Gilbert Damping in the CoFe/CuOx Orbital Torque System
- Applications of Nanomagnets as Dynamical Systems
- Laser-induced torques in metallic antiferromagnets
- Orbital Pumping in Ferrimagnetic Insulators
- Interface transparency to orbital current
- Quantum correction to the orbital Hall effect
- Tunable spin and orbital torques in Cu-based magnetic heterostructures
- Intrinsic torque on the orbital angular momentum in an electric field
- Hidden interplay of current-induced spin and orbital torques in bulk FeGeTe
- Emergence of large spin-charge interconversion at an oxidized Cu/W interface
- Enhanced torque efficiency in ferromagnetic multilayers by introducing naturally oxidized Cu
- Nonlinear spin and orbital Edelstein effect in WTe2
- Orbital Gravito-Magnetoelectric response and Orbital magnetic quadrupole moment correction
- Giant orbital Hall effect due to the bulk states of 3D topological insulators
- Unconventional Spin-orbit Torques by Two-dimensional Multilayered MXenes for Future Nonvolatile Magnetic Memories
- Anatomy of torques from orbital Rashba textures: the case of Co/Al interfaces
- Theoretical study of orbital torque: Dependence on ferromagnet species and nonmagnetic layer thickness
- Ge as an orbitronic platform: giant in-plane orbital magneto-electric effect in a 2-dimensional hole gas
- Orbital Hall effect in spin-3/2 hole-doped semiconductors and its implications for orbitronics
- Orbital Dynamics in Centrosymmetric Systems