Interfacial Spin Seebeck effect in noncollinear magnetic systems
arXiv:1812.09890 · doi:10.1103/PhysRevB.99.224410
Abstract
The interplay between spin and heat currents at magnetic insulator|nonmagnetic metal interfaces has been a subject of much scrutiny because of both fundamental physics and the promise for technological applications. While ferrimagnetic and, more recently, antiferromagnetic systems have been extensively investigated, a theory generalizing the heat-to-spin interconversion in noncollinear magnets is still lacking. Here, we establish a general framework for thermally-driven spin transport at the interface between a noncollinear magnet and a normal metal. Modeling the interfacial coupling between localized and itinerant magnetic moments via an exchange Hamiltonian, we derive an expression for the spin current, driven by a temperature difference, for an arbitrary noncollinear magnetic order. Our theory reproduces previously obtained results for ferromagnetic and antiferromagnet systems.
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Cited by in corpus (13)
- Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet
- Spin Seebeck Effect near the Antiferromagnetic Spin-Flop Transition
- Orbital Magnetic Moment of Magnons
- Spin Seebeck and Spin Nernst Effects of Magnons in Noncollinear Antiferromagnetic Insulators
- Observation of Vector Spin Seebeck Effect in a Noncollinear Antiferromagnet
- Spin Transport in Thick Insulating Antiferromagnetic Films
- Cross-sublattice Spin Pumping and Magnon Level Attraction in van der Waals Antiferromagnets
- An insulating doped antiferromagnet with low magnetic symmetry as a room temperature spin conduit
- Spin superfluidity in noncollinear antiferromagnets
- Intrinsic Magnon Nernst Effects in Pyrochlore Iridate Thin Films
- Longitudinal Spin Seebeck effect in Pyrochlore Iridates with Bulk and Interfacial Dzyaloshinskii-Moriya interaction
- Unified formulation of interfacial magnonic pumping from non-collinear magnets
- Tuning spin currents in collinear antiferromagnets and altermagnets