Rational design principles for giant spin Hall effect in 5d-transition metal oxides

Abstract

Spin Hall effect (SHE), a mechanism by which materials convert a \textit{charge} current into a \textit{spin} current, invokes interesting physics and promises to empower transformative, energy-efficient memory technology. However, fundamental questions remain about the essential factors that determine SHE. Here we solve this open problem, presenting a comprehensive theory of five \textit{foundational factors} that control the value of intrinsic SHE in transition metal oxides. Arising from our key insight regarding the inherently geometric nature of SHE, we demonstrate that two of these factors are crystal field strength and structural distortions. Moreover, we discover that a new class of materials (anti-perovskites) promises to demonstrate \textit{giant} SHE, that is an order of magnitude larger than that reported for any oxide. We derive three other factors that control SHE and demonstrate the nuanced role of electron correlations. Our findings bring deeper insight into the physics driving SHE, and could help enhance, as well as, externally control SHE values.

References in corpus (36)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Berry Phase Effects on Electronic Properties
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• Spin Hall effect
• Universal Intrinsic Spin-Hall Effect
• Dissipationless Quantum Spin Current at Room Temperature
• Direct electronic measurement of the spin Hall effect
• Spin transfer torque devices utilizing the giant spin Hall effect of tungsten
• Correlated quantum phenomena in the strong spin-orbit regime
• Room Temperature Reversible Spin Hall Effect
• Mott physics and band topology in materials with strong spin-orbit interaction
• Topological nodal line semimetals with and without spin-orbital coupling
• Catalogue of Topological Electronic Materials
• Ab initio calculation of the anomalous Hall conductivity by Wannier interpolation
• Room-temperature perpendicular magnetization switching through giant spin-orbit torque from sputtered BixSe(1-x) topological insulator material
• A conductive topological insulator with colossal spin Hall effect for ultra-low power spin-orbit-torque switching
• Interplay of Spin-Orbit Interactions, Dimensionality, and Octahedral Rotations in Semimetallic SrIrO${}_3$
• Dirac nodal lines and induced spin Hall effect in metallic rutile oxides
• 5d transition metal oxide IrO2 as a material for spin current detection
• Anisotropic spin-orbit torque generation in epitaxial SrIrO3 by symmetry design
• Pyrochlore electrons under pressure, heat and field: shedding light on the iridates
• Mixing of $t_{2g}$-$e_g$ orbitals in 4d and 5d transition metal oxides
• Tunable Giant Spin Hall Conductivities in a Strong Spin-Orbit Semimetal: Bi${}_{1-x}$Sb${}_x$
• Topological crystalline semimetals in non-symmorphic lattices
• Spin-Hall Torques Generated by Rare-Earth (Lanthanide) Thin Films
• Large room temperature spin-to-charge conversion signals in a few-layer graphene/Pt lateral heterostructure
• Anisotropy tuned magnetic order in pyrochlore iridates
• Strong magnetic instability in correlated metal Bi2Ir2O7
• Effect of spin orbit coupling and Hubbard $U$ on the electronic structure of IrO${}_2$
• Study of intrinsic spin and orbital Hall effects in Pt based on a (6s, 6p, 5d) tight-binding model
• Charge Density Wave Instability and Soft Phonon in $A$Pt${}_3$P ($A$=Ca, Sr, and La)
• First-principles study on cubic pyrochlore iridates Y2Ir2O7 and Pr2Ir2O7
• Computational search for Dirac and Weyl nodes in $f$-electon antiperovskites
• Electronic Structures, Magnetism, and Phonon Spectra in the Metallic Cubic Perovskite BaOsO3
• Experimental Electronic Structure of the Metallic Pyrochlore Iridate Bi2Ir2O7

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• Spin Hall Conductivity and Anomalous Hall Conductivity in Full Heusler compounds
• Anisotropic linear and nonlinear charge-spin conversion in topological semimetal SrIrO3
• Geometric Origin of Intrinsic Spin Hall Effect in an Inhomogeneous Electric Field
• Spin-orbit torque generation in bilayers composed of CoFeB and epitaxial SrIrO${}_3$ grown on an orthorhombic DyScO${}_3$ substrate
• Stacking-order effect on spin-orbit torque, spin-Hall magnetoresistance, and magnetic anisotropy in Ni${}_{81}$Fe${}_{19}$-IrO${}_2$ bilayers