Ferreira, Aires orcid.org/0000-0001-6017-8669 (2021) Theory of spin–charge-coupled transport in proximitized graphene: an SO(5) algebraic approach. Journal of Physics: Materials. 045006. ISSN 2515-7639
Abstract
Establishing the conditions under which orbital, spin and lattice-pseudospin degrees of freedom are mutually coupled in realistic nonequilibrium conditions is a major goal in the emergent field of graphene spintronics. Here, we use linear-response theory to obtain a unified microscopic description of spin dynamics and coupled spin–charge transport in graphene with an interface-induced Bychkov–Rashba effect. Our method makes use of an SO(5) extension of the familiar inverse-diffuson approach to obtain a quantum kinetic equation for the single-particle density matrix that treats spin and pseudospin on equal footing and is valid for arbitrary external perturbations. As an application of the formalism, we derive a complete set of drift–diffusion equations for proximitized graphene with scalar impurities in the presence of electric and spin-injection fields which vary slowly in space and time. Our approach is amenable to a wide variety of generalizations, including the study of coupled spin–charge dynamics in layered materials with strong spin–valley coupling and spin–orbit torques in van der Waals heterostructures.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 The Author(s). | ||||
Keywords: | spintronics, spin-orbit coupling, graphene, van der Waals heterostructures, spin-charge conversion, spin dynamics, spin Hall effect | ||||
Dates: |
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Institution: | The University of York | ||||
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) | ||||
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Depositing User: | Pure (York) | ||||
Date Deposited: | 29 Oct 2021 08:50 | ||||
Last Modified: | 10 Jan 2024 00:18 | ||||
Published Version: | https://doi.org/10.1088/2515-7639/ac31b5 | ||||
Status: | Published | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1088/2515-7639/ac31b5 |
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Filename: Ferreira_2021_J._Phys._Mater._4_045006.pdf
Description: Theory of spin–charge-coupled transport in proximitized graphene: an SO(5) algebraic approach
Licence: CC-BY 2.5