Temperature Dependence of Angular Momentum Transport Across Interfaces

Abstract

Angular momentum transport in magnetic multilayered structures plays a central role in spintronic physics and devices. The angular momentum currents or spin currents are carried by either quasi-particles such as electrons and magnons, or by macroscopic order parameters such as local magnetization of ferromagnets. Based on the generic interface exchange interaction, we develop a microscopic theory that describes interfacial spin conductance for various interfaces among non-magnetic metals, ferromagnetic and antiferromagnetic insulators. Spin conductance and its temperature dependence are obtained for different spin batteries including spin pumping, temperature gradient and spin Hall effect. As an application of our theory, we calculate the spin current in a trilayer made of a ferromagnetic insulator, an antiferromagnetic insulator and a non-magnetic heavy metal. The calculated results on the temperature dependence of spin conductance quantitatively agree with the existing experiments.

References in corpus (9)

• Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
• Theory of magnon-driven spin Seebeck effect
• Spin pumping and spin-transfer torques in antiferromagnets
• Enhancement of Thermally Injected Spin Current through an Antiferromagnetic Insulator
• Magnon Mediated Electric Current Drag Across a Ferromagnetic Insulator Layer
• Spin convertance at magnetic interfaces
• Spin Hall Angle Quantification from Spin Pumping and Microwave Photoresistance
• Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
• Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc

Cited by in corpus (16)

• Antiferromagnetic spintronics
• Spin Nernst Effect of Magnons in Collinear Antiferromagnets
• Electrical Detection of Spin Backflow from an Antiferromagnetic Insulator/Y3Fe5O12 Interface
• Observation of Antiferromagnetic Magnon Pseudospin Dynamics and the Hanle effect
• Ferroic collinear multilayer magnon spin valve
• Coherent transfer of spin angular momentum by evanescent spin waves within antiferromagnetic NiO
• Spin Seebeck Effect: Sensitive Probe for Elementary Excitation, Spin Correlation, Transport, Magnetic Order, and Domains in Solids
• Coherent ac spin current transmission across an antiferromagnetic CoO insulator
• Spin transport across antiferromagnets induced by the spin Seebeck effect
• The importance of the interface for picosecond spin pumping in antiferromagnet-heavy metal heterostructures
• Interlayer Couplings Mediated by Antiferromagnetic Magnons
• Emergence of Dirac-like bands in the monolayer limit of epitaxial Ge films on Au(111)
• Magnon hybridization in ferrimagnetic heterostructures
• Magnonic Spin-Transfer Torque in Ferromagnet/Antiferromagnet/Ferromagnet Trilayer
• Ginzburg-Landau theory of spin pumping through an antiferromagnetic layer near the Néel temperature
• Spin Nernst Effect of Antiferromagnetic Magnons in the Presence of Spin Diffusion