Spin Hall Effects in Antiferromagnets
arXiv:2003.01714 · doi:10.1103/PhysRevB.101.184411
Abstract
Recent experiments demonstrate that antiferromagnets exhibit the spin Hall effect. We study a tight-binding model of an antiferromagnet on a square lattice with Rashba spin-orbit coupling and disorder. By exact diagonalization of a finite system connected to reservoirs within the Landauer-Bttiker formalism, we compute the transverse spin Hall current in response to a longitudinal voltage difference. Surprisingly, the spin Hall conductance can be considerably larger in antiferromagnets than in normal metals. We compare our results to the Berry-phase-induced spin Hall effect governed by the intrinsic contribution in the Kubo formula. The Berry-phase-induced intrinsic spin Hall conductivity in bulk systems shows the opposite behavior: large exchange couplings in AFs drastically reduce the spin Hall current.
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References in corpus (49)
- Anomalous Hall effect
- Spin torque switching with the giant spin Hall effect of tantalum
- Spin Hall effect
- Antiferromagnetic spintronics
- Antiferromagnetic spintronics
- Universal Intrinsic Spin-Hall Effect
- Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
- Electrical switching of an antiferromagnet
- Direct electronic measurement of the spin Hall effect
- Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
- Kwant: a software package for quantum transport
- Room Temperature Reversible Spin Hall Effect
- Wave-packet dynamics in slowly perturbed crystals: Gradient corrections and Berry-phase effects
- Long distance transport of magnon spin information in a magnetic insulator at room temperature
- Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
- Berry phase, hyperorbits, and the Hofstadter spectrum: semiclassical dynamics in magnetic Bloch bands
- Electrically controlled long-distance spin transport through an antiferromagnetic insulator
- Evidence for reversible control of magnetization in a ferromagnetic material via spin-orbit magnetic field
- Relativistic Neel-order fields induced by electrical current in antiferromagnets
- A conductive topological insulator with colossal spin Hall effect for ultra-low power spin-orbit-torque switching
- Spin current and polarization in impure 2D electron systems with spin-orbit coupling
- Intrinsic spin Hall effect in platinum metal
- Writing and Reading antiferromagnetic MnAu: Néel spin-orbit torques and large anisotropic magnetoresistance
- Current induced electron spin polarization in strained semiconductors
- Spin pumping and spin-transfer torques in antiferromagnets
- Suppression of the Persistent Spin Hall Current by Defect Scattering
- Subterahertz spin pumping from an insulating antiferromagnet
- Terahertz Antiferromagnetic Spin Hall Nano-Oscillator
- Spin pumping by parametrically excited exchange magnons
- Anomalous Hall effect in 2D Dirac band: link between Kubo-Streda formula and semiclassical Boltzmann equation approach
- Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
- Evolution of the spin Hall effect in Pt nanowires: Size and temperature effects
- Electrical switching of antiferromagnetic MnAu and the role of thermal activation
- Spin-Hall conductivity due to Rashba spin-orbit interaction in disordered systems
- Spin-Hall Effect in Two-Dimensional Electron Systems with Rashba Spin-Orbit Coupling and Disorder
- Manifestation of the spin-Hall effect through transport measurements in the mesoscopic regime
- Mesoscopic Spin Hall Effect in Multiprobe Ballistic Spin-Orbit Coupled Semiconductor Bridges
- Anisotropic spin Hall effect from first principles
- Antiferromagnetic magnons as highly squeezed Fock states underlying quantum correlations
- Spin-Hall effect: Back to the Beginning on a Higher Level
- Prospect for antiferromagnetic spintronics
- Enhancement of superconductivity mediated by antiferromagnetic squeezed magnons
- Non-local coupling between antiferromagnets and ferromagnets in cavities
- The Intrinsic Spin Hall Conductivity in a Generalized Rashba Model
- Spin-Orbit-Induced Spin, Charge, and Energy Transport in Diffusive Superconductors
- Unraveling the influence of electronic and magnonic spin current injection near the magnetic ordering transition of IrMn metallic antiferromagnets
- Extrinsic Spin-Charge Coupling in Diffusive Superconducting Systems
- Spin transfer and spin pumping in disordered normal metal-antiferromagnetic insulator systems
- Landauer-Büttiker Study of the Anomalous Hall Effect