Spin Seebeck effect in antiferromagnets and compensated ferrimagnets

Abstract

We theoretically investigate the spin Seebeck effect (SSE) in antiferromagnets and ferrimagnets, and show that the SSE vanishes in antiferromagnets but survives in ferrimagnets even at the magnetization compensation point despite the absence of its saturation magnetization. The non-vanishing SSE in ferrimagnets stems from two non-degenerate magnons. We demonstrate that the magnitude of the SSE in ferrimagnets is unchanged across the magnetization compensation point.

7 pages, 5 figures

References in corpus (6)

• Direct electronic measurement of the spin Hall effect
• Spin Seebeck insulator
• Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
• Theory of magnon-driven spin Seebeck effect
• Spin-orbit coupling induced anisotropy effects in bimetallic antiferromagnets: A route towards antiferromagnetic spintronics
• Phenomenology of Current-Induced Dynamics in Antiferromagnets

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• Antiferromagnetic magnon pseudospin: Dynamics and diffusive transport
• Laser control of magnonic topological phases in antiferromagnets
• Thermally induced magnon accumulation in two-sublattice magnets
• Magnon hybridization in ferrimagnetic heterostructures
• Cryogenic spin Seebeck effect
• Magnon drag in a metal-insulating antiferromagnet bilayer
• Unified formulation of interfacial magnonic pumping from non-collinear magnets
• Magnon drag induced by magnon-magnon interactions characteristic of noncollinear magnets
• Optomagnonic Josephson effect in antiferromagnets
• Interband magnon drag in ferrimagnetic insulators
• Broad line-width of antiferromagnetic spinwave due to electrons correlation
• Tunneling between chiral magnets: Spin current generation without external fields
• Theory of drift-enabled control in nonlocal magnon transport
• Origin and dynamics of umbrella states in rare-earth iron garnets