5d transition metal oxide IrO2 as a material for spin current detection

Abstract

Devices based on a pure spin current (a flow of spin angular momentum) have been attracting increasing attention as key ingredients for low-dissipation electronics. To integrate such spintronics devices into charge-based technologies, an electric detection of spin current is essential. Inverse spin Hall effect converts a spin current into an electric voltage through spin-orbit coupling. Noble metals such as Pt and Pd, and also Cu-based alloys, owing to the large direct spin Hall effect, have been regarded as potential materials for a spin-current injector. Those materials, however, are not promising as a spin-current detector based on inverse spin Hall effect. Their spin Hall resistivity rho_SH, representing the performance as a detector, is not large enough mainly due to their low charge resistivity. Here we demonstrate that heavy transition metal oxides can overcome such limitations inherent to metal-based spintronics materials. A binary 5d transition metal oxide IrO2, owing to its large resistivity as well as a large spin-orbit coupling associated with 5d character of conduction electrons, was found to show a gigantic rho_SH ~ 38 microohm cm at room temperature, one order of magnitude larger than those of noble metals and Cu-based alloys and even comparable to those of atomic layer thin film of W and Ta.

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Cited by in corpus (35)

• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Thermoelectric generation based on spin Seebeck effects
• Topological quantum materials from the viewpoint of chemistry
• Observation of inverse spin Hall effect in bismuth selenide
• Oxide spin-orbitronics: spin-charge interconversion and topological spin textures
• Dirac nodal lines and induced spin Hall effect in metallic rutile oxides
• Anisotropic spin-orbit torque generation in epitaxial SrIrO3 by symmetry design
• Reciprocal spin Hall effects in conductors with strong spin-orbit coupling: a review
• Observation of Spin Hall Effect in Weyl Semimetal WTe2 at Room Temperature
• Origin of inverse Rashba-Edelstein effect at Cu/Bi interface using lateral spin valves
• Unveiling the mechanisms of the spin Hall effect in Ta
• Relation between spin Hall effect and anomalous Hall effect in 3$d$ ferromagnetic metals
• Large room temperature spin-to-charge conversion signals in a few-layer graphene/Pt lateral heterostructure
• Theory of Large Intrinsic Spin Hall Effect in Iridate Semimetals
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• Role of Dirac nodal lines and strain on the high spin Hall conductivity of epitaxial IrO2 thin films
• Giant spin Hall Effect in two-dimensional monochalcogenides
• Rational design principles for giant spin Hall effect in 5d-transition metal oxides
• Spin-orbit torque generation in NiFe/IrO2 bilayers
• Topological Properties and Functionalities in Oxide Thin Films and Interfaces
• All-oxide spin Seebeck effects
• Field-direction control of the type of charge carriers in nonsymmorphic IrO2
• Atomically flat reconstructed rutile TiO2(001) surfaces for oxide film growth
• Universal scaling for the spin-electricity conversion on surface states of topological insulators
• The role of spin-orbit coupling in the electronic structure of IrO${}_2$
• Critical spin fluctuation mechanism for the spin Hall effect
• Experimental evidence of spin-orbit torque from metallic interfaces
• Stacking-order effect on spin-orbit torque, spin-Hall magnetoresistance, and magnetic anisotropy in Ni${}_{81}$Fe${}_{19}$-IrO${}_2$ bilayers
• Generation and detection of dissipationless spin current in MgO/Si bilayer
• Mott insulator-to-metal transition in yttrium-doped CaIrO3
• Quantum-interference origin and magnitude of 1/$f$ noise in Dirac nodal line IrO${}_2$ nanowires at low temperatures
• Giant non-volatile electric field control of proximity induced magnetism in the spin-orbit semimetal SrIrO3
• Effect of crystallinity on spin-orbit torque in 5$\text{d}$ iridium oxide IrO${}_2$
• Dependence of the Inverse Spin Hall Effect in Sr(Nb${}_x$Ti${}_{1-x}$)O${}_3$ on the Nb concentration
• Topological Electronic Structure and Transport Properties of the Distorted Rutile-type WO${}_2$