Spin Transport at Interfaces with Spin-orbit Coupling: Formalism
By Vivek Amin, Mark D. Stiles. 2016
183 citations recorded by the source corpus.
We generalize magnetoelectronic circuit theory to account for spin transfer to and from the atomic lattice via interfacial spin-orbit coupling. This enables a proper treatment of spin transport at interfaces between a ferromagnet and a heavy-metal non-magnet. This generalized approach describes spin transport in terms of drops in spin and charge accumulations across the interface (as in the standard approach), but additionally includes the responses from in-plane electric fields and offsets in spin accumulations. A key finding is that in-plane electric fields give rise to spin accumulations and spin currents that can be polarized in any direction, generalizing the Rashba-Edelstein and spin Hall effects. The spin accumulations exert torques on the magnetization at the interface when they are misaligned from the magnetization. The additional out-of-plane spin currents exert torques via the spin-transfer mechanism on the ferromagnetic layer. To account for these phenomena we also describe spin torques within the generalized circuit theory. The additional effects included in this generalized circuit theory suggest modifications in the interpretations of experiments involving spin orbit torques, spin pumping, spin memory loss, the Rashba-Edelstein effect, and the spin Hall magnetoresistance.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/3a17ca526cf0819bcec6be4217d65e4d75339581
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems (2018, methodology): “…effect, also the iSGE and other potential spin-orbit coupling and spin-current contributions originating from the spin-orbit coupled from the interface (Amin and Stiles, 2016a,b; Kim et al., 2017b; Lifshits and Dyakonov, 2009; Miron et al., 2011a; Saidaoui and Manchon, 2016; Sinova et al., 2015).”