Boosting proximity spin orbit coupling in graphene/WSe2 heterostructures via hydrostatic pressure

Fülöp, Balint and Marffy, Albin and Zihlmann, Simon and Gmitra, Martin and Tovari, Endre and Szentpeteri, Balint and Kedves, Máté and Watanabe, Kenji and Taniguchi, Takashi and Fabian, Jaroslav and Schönenberger, Christian and Makk, Peter and Csonka, Szabolcs. (2021) Boosting proximity spin orbit coupling in graphene/WSe2 heterostructures via hydrostatic pressure. npj 2D Materials and Applications, 5 (1). p. 82.

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Van der Waals heterostructures composed of multiple few layer crystals allow the engineering of novel materials with predefined properties. As an example, coupling graphene weakly to materials with large spin orbit coupling (SOC) allows to engineer a sizeable SOC in graphene via proximity effects. The strength of the proximity effect depends on the overlap of the atomic orbitals, therefore, changing the interlayer distance via hydrostatic pressure can be utilized to enhance the interlayer coupling between the layers. In this work, we report measurements on a graphene/WSe2 heterostructure exposed to increasing hydrostatic pressure. A clear transition from weak localization to weak anti-localization is visible as the pressure increases, demonstrating the increase of induced SOC in graphene.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Schönenberger, Christian
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:07 Apr 2022 10:32
Deposited On:07 Apr 2022 10:32

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