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Article: Spin photovoltaic effect in magnetic van der Waals heterostructures

TitleSpin photovoltaic effect in magnetic van der Waals heterostructures
Authors
Issue Date2021
PublisherAmerican Association for the Advancement of Science: Science Advances. The Journal's web site is located at http://www.scienceadvances.org/
Citation
Science Advances, 2021, v. 7 n. 36, p. article no. eabg8094 How to Cite?
AbstractThe development of van der Waals (vdW) crystals and their heterostructures has created a fascinating platform for exploring optoelectronic properties in the two-dimensional (2D) limit. With the recent discovery of 2D magnets, the control of the spin degree of freedom can be integrated to realize 2D spin-optoelectronics. Here, we report spin photovoltaic effects in vdW heterostructures of 2D magnet chromium triiodide (CrI3) sandwiched by graphene contacts. The photocurrent displays a distinct dependence on light helicity, which can be tuned by varying the magnetic states and photon energy. Circular polarization–resolved absorption measurements reveal that these observations originate from magnetic order–coupled and, thus, helicity-dependent charge-transfer excitons. The photocurrent displays multiple plateaus as the magnetic field is swept, associated with different CrI3 spin configurations. Giant photo-magnetocurrent is observed, which tends to infinity for a small applied bias. Our results pave the way to explore emergent photospintronics by engineering magnetic vdW heterostructures.
Persistent Identifierhttp://hdl.handle.net/10722/305033
ISSN
2023 Impact Factor: 11.7
2023 SCImago Journal Rankings: 4.483
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSong, TC-
dc.contributor.authorAnderson, E-
dc.contributor.authorTu, MWY-
dc.contributor.authorSeyler, K-
dc.contributor.authorTaniguchi, T-
dc.contributor.authorWatanabe, K-
dc.contributor.authorMcguire, MA-
dc.contributor.authorLi, X-
dc.contributor.authorCao, T-
dc.contributor.authorXiao, D-
dc.contributor.authorYao, W-
dc.contributor.authorXu, X-
dc.date.accessioned2021-10-05T02:38:48Z-
dc.date.available2021-10-05T02:38:48Z-
dc.date.issued2021-
dc.identifier.citationScience Advances, 2021, v. 7 n. 36, p. article no. eabg8094-
dc.identifier.issn2375-2548-
dc.identifier.urihttp://hdl.handle.net/10722/305033-
dc.description.abstractThe development of van der Waals (vdW) crystals and their heterostructures has created a fascinating platform for exploring optoelectronic properties in the two-dimensional (2D) limit. With the recent discovery of 2D magnets, the control of the spin degree of freedom can be integrated to realize 2D spin-optoelectronics. Here, we report spin photovoltaic effects in vdW heterostructures of 2D magnet chromium triiodide (CrI3) sandwiched by graphene contacts. The photocurrent displays a distinct dependence on light helicity, which can be tuned by varying the magnetic states and photon energy. Circular polarization–resolved absorption measurements reveal that these observations originate from magnetic order–coupled and, thus, helicity-dependent charge-transfer excitons. The photocurrent displays multiple plateaus as the magnetic field is swept, associated with different CrI3 spin configurations. Giant photo-magnetocurrent is observed, which tends to infinity for a small applied bias. Our results pave the way to explore emergent photospintronics by engineering magnetic vdW heterostructures.-
dc.languageeng-
dc.publisherAmerican Association for the Advancement of Science: Science Advances. The Journal's web site is located at http://www.scienceadvances.org/-
dc.relation.ispartofScience Advances-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleSpin photovoltaic effect in magnetic van der Waals heterostructures-
dc.typeArticle-
dc.identifier.emailYao, W: wangyao@hku.hk-
dc.identifier.authorityYao, W=rp00827-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1126/sciadv.abg8094-
dc.identifier.pmid34516904-
dc.identifier.pmcidPMC8442881-
dc.identifier.scopuseid_2-s2.0-85114124147-
dc.identifier.hkuros326228-
dc.identifier.volume7-
dc.identifier.issue36-
dc.identifier.spagearticle no. eabg8094-
dc.identifier.epagearticle no. eabg8094-
dc.identifier.isiWOS:000695711400031-
dc.publisher.placeUnited States-

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