Control of Charge-Spin Interconversion in van der Waals Heterostructures with Chiral Charge Density Waves.

Autor: Chi Z; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain., Lee S; Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA., Yang H; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain., Dolan E; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain., Safeer CK; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain.; Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, UK., Ingla-Aynés J; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain., Herling F; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain., Ontoso N; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain., Martín-García B; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain.; IKERBASQUE, Basque Foundation for Science, Bilbao, 48009, Basque Country, Spain., Gobbi M; IKERBASQUE, Basque Foundation for Science, Bilbao, 48009, Basque Country, Spain.; Centro de Física de Materiales (CSIC-EHU/UPV) and Materials Physics Center (MPC), Donostia-San Sebastián, 20018, Basque Country, Spain., Low T; Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA.; Department of Physics, University of Minnesota, Minneapolis, MN, 55455, USA., Hueso LE; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain.; IKERBASQUE, Basque Foundation for Science, Bilbao, 48009, Basque Country, Spain., Casanova F; CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Basque Country, Spain.; IKERBASQUE, Basque Foundation for Science, Bilbao, 48009, Basque Country, Spain.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 May; Vol. 36 (18), pp. e2310768. Date of Electronic Publication: 2024 Jan 26.
DOI: 10.1002/adma.202310768
Abstrakt: A charge density wave (CDW) represents an exotic state in which electrons are arranged in a long-range ordered pattern in low-dimensional materials. Although the understanding of the fundamental character of CDW is enriched after extensive studies, its practical application remains limited. Here, an unprecedented demonstration of a tunable charge-spin interconversion (CSI) in graphene/1T-TaS 2 van der Waals heterostructures is shown by manipulating the distinct CDW phases in 1T-TaS 2 . Whereas CSI from spins polarized in all three directions is observed in the heterostructure when the CDW phase does not show commensurability, the output of one of the components disappears, and the other two are enhanced when the CDW phase becomes commensurate. The experimental observation is supported by first-principles calculations, which evidence that chiral CDW multidomains in the heterostructure are at the origin of the switching of CSI. The results uncover a new approach for on-demand CSI in low-dimensional systems, paving the way for advanced spin-orbitronic devices.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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