Unraveling the Spin-to-Charge Current Conversion Mechanism and Charge Transfer Dynamics at the Interface of Graphene/WS2 Heterostructures at Room Temperature

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dc.contributor.authorCunha R.O.
dc.contributor.authorGarcia-Basabe Y.
dc.contributor.authorLarrude D.G.
dc.contributor.authorGamino M.
dc.contributor.authorN. Lima E.
dc.contributor.authorCrasto de Lima F.
dc.contributor.authorFazzio A.
dc.contributor.authorRezende S.M.
dc.contributor.authorAzevedo A.
dc.contributor.authorMendes J.B.S.
dc.date.accessioned2024-11-01T06:13:32Z
dc.date.available2024-11-01T06:13:32Z
dc.date.issued2024
dc.description.abstract© 2024 The Authors. Published by American Chemical Society.We report experimental investigations of spin-to-charge current conversion and charge transfer (CT) dynamics at the interface of the graphene/WS2 van der Waals heterostructure. Pure spin current was produced by the spin precession in the microwave-driven ferromagnetic resonance of a permalloy film (Py=Ni81Fe19) and injected into the graphene/WS2 heterostructure through a spin pumping process. The observed spin-to-charge current conversion in the heterostructure is attributed to the inverse Rashba-Edelstein effect (IREE) at the graphene/WS2 interface. Interfacial CT dynamics in this heterostructure was investigated based on the framework of the core-hole clock (CHC) approach. The results obtained from spin pumping and CHC studies show that the spin-to-charge current conversion and charge transfer processes are more efficient in the graphene/WS2 heterostructure compared to isolated WS2 and graphene films. The results show that the presence of WS2 flakes improves the current conversion efficiency. These experimental results are corroborated by density functional theory (DFT) calculations, which reveal (i) Rashba spin-orbit splitting of graphene orbitals and (ii) electronic coupling between graphene and WS2 orbitals. This study provides valuable insights for optimizing the design and performance of spintronic devices.
dc.identifier.doi10.1021/acsami.4c08539
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/39692
dc.relation.ispartofACS Applied Materials and Interfaces
dc.rightsAcesso Aberto
dc.subject.otherlanguagecharge transfer dynamics
dc.subject.otherlanguagegraphene
dc.subject.otherlanguageRashba spin−orbit coupling
dc.subject.otherlanguagespin-to-charge current conversion
dc.subject.otherlanguagespintronics
dc.subject.otherlanguagetransition-metal dichalcogenides
dc.titleUnraveling the Spin-to-Charge Current Conversion Mechanism and Charge Transfer Dynamics at the Interface of Graphene/WS2 Heterostructures at Room Temperature
dc.typeArtigo
local.scopus.citations0
local.scopus.eid2-s2.0-85205826199
local.scopus.subjectCharge current
local.scopus.subjectCharge-transfer dynamics
local.scopus.subjectCurrent charge
local.scopus.subjectCurrent conversion
local.scopus.subjectGraphenes
local.scopus.subjectRashba spin-orbit coupling
local.scopus.subjectSpin-pumping
local.scopus.subjectSpin-to-charge current conversion
local.scopus.subjectTransition metal dichalcogenides (TMD)
local.scopus.subjectWS 2
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85205826199&origin=inward
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