Transformation of spin current by antiferromagnetic insulators

Abstract

It is demonstrated theoretically that a thin layer of an anisotropic antiferromagnetic (AFM) insulator can effectively conduct spin current by excitation of a pair of evanescent AFM spin wave modes. The spin current flowing through the AFM is not conserved due to the interaction between the excited AFM modes and the AFM lattice, and, depending on the excitation conditions, can be either attenuated or enhanced. When the phase difference between the excited evanescent modes is close to $\pi /2$, there is an optimum AFM thickness for which the output spin current reaches a maximum, that can significantly exceed the magnitude of the input spin current. The spin current transfer through the AFM depends on the ambient temperature and increases substantially when temperature approaches the Neel temperature of the AFM layer.

References in corpus (4)

• Spin pumping and spin-transfer torques in antiferromagnets
• Antiferromagnonic Spin Transport from Y${}_3$Fe${}_5$O${}_{12}$ into NiO
• Spin Oscillations in Antiferromagnetic NiO Triggered by Circularly Polarized Light
• Anti-damping spin transfer torque through epitaxial Nickel oxide

Cited by in corpus (47)

• Antiferromagnetic spintronics
• Subterahertz spin pumping from an insulating antiferromagnet
• Antiferromagnetic Domain Wall as Spin Wave Polarizer and Retarder
• Ultrafast optical excitation of coherent magnons in antiferromagnetic NiO
• Long-distance spin transport in a disordered magnetic insulator
• Fully Spin-transparent magnetic interfaces enabled by insertion of a paramagnetic NiO layer
• Electrical Detection of Spin Backflow from an Antiferromagnetic Insulator/Y3Fe5O12 Interface
• Ferroic collinear multilayer magnon spin valve
• Spin Superfluidity in Biaxial Antiferromagnetic Insulators
• Coherent transfer of spin angular momentum by evanescent spin waves within antiferromagnetic NiO
• The effect of inserted NiO layer on spin-Hall magnetoresistance in Pt/NiO/YIG heterostructures
• Enhanced Spin Conductance of a Thin-Film Insulating Antiferromagnet
• Nonabelian magnonics in antiferromagnets
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• Spin Transport through the metallic antiferromagnet FeMn
• Coherent ac spin current transmission across an antiferromagnetic CoO insulator
• Electrically tunable detector of THz-frequency signals based on an antiferromagnet
• Temperature Dependence of Angular Momentum Transport Across Interfaces
• Spin transport across antiferromagnets induced by the spin Seebeck effect
• Spin transport in multilayer systems with fully epitaxial NiO thin films
• Spin-Hall nanooscillator based on an antiferromagnetic domain wall
• Spin-wave chirality and its manifestations in antiferromagnets
• Excitation of magnon spin photocurrents in antiferromagnetic insulators
• Relaxation mechanism driven by spin angular momentum absorption throughout antiferromagnetic phase transition in NiFe surface oxides
• Unraveling the influence of electronic and magnonic spin current injection near the magnetic ordering transition of IrMn metallic antiferromagnets
• Effects of magnetic anisotropy on spin and thermal transports in classical antiferromagnets on the square lattice
• Rectification of the spin Seebeck current in noncollinear antiferromagnets
• Role of spin mixing conductance in determining thermal spin pumping near the ferromagnetic phase transition in EuO_{1-x} and La2NiMnO6
• Theory of spin transport through antiferromagnetic insulator
• Antiferromagnetic nano-oscillator in external magnetic fields
• Magnon hybridization in ferrimagnetic heterostructures
• Damping enhancement in coherent ferrite/insulating-paramagnet bilayers
• Phase Boundary Exchange Coupling in the Mixed Magnetic Phase Regime of a Pd-doped FeRh Epilayer
• Thermal squeezing and nonlinear spectral shift of magnons in antiferromagnetic insulators
• Crossover from Diffusive to Superfluid Transport in Frustrated Magnets
• Boundary conditions at the interface of finite thickness between ferromagnetic and antiferromagnetic materials
• X-ray detected ferromagnetic resonance techniques for the study of magnetization dynamics
• Spin wave excitations in exchange biased IrMn/CoFe bilayers
• Spin and thermal transport and critical phenomena in three-dimensional antiferromagnets
• Artificial neurons based on antiferromagnetic auto-oscillators as a platform for neuromorphic computing
• Magnonic Proximity Effect in Insulating Ferro- and Antiferromagnetic Trilayers
• Propagation of Spin Waves Through an Interface Between Ferromagnetic and Antiferromagnetic Materials
• Hall mass and transverse Noether spin currents in noncollinear antiferromagnets
• Magnonic Spin-Transfer Torque in Ferromagnet/Antiferromagnet/Ferromagnet Trilayer
• Part of a collection of reviews on antiferromagnetic spintronics. Antiferromagnetic dynamics, spin-texures, and nanostructures
• Ginzburg-Landau theory of spin pumping through an antiferromagnetic layer near the Néel temperature
• Enhancement of Spin Currents in a Lattice near the Curie Point