New method of transport measurements on van der Waals heterostructures under pressure

Fülöp, Balint and Marffy, Albin and Tovari, Endre and Kedves, Máté and Zihlmann, Simon and Indolese, David and Kovács-Krausz, Zoltán and Watanabe, Kenji and Taniguchi, Takashi and Schönenberger, Christian and Kézsmárki , István and Csonka, Szabolcs and Makk, Péter . (2021) New method of transport measurements on van der Waals heterostructures under pressure. Journal of Applied Physics, 130 (6). 064303.

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Official URL: https://edoc.unibas.ch/86340/

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The interlayer coupling, which has a strong influence on the properties of van der Waals heterostructures, strongly depends on the interlayer distance. Although considerable theoretical interest has been demonstrated, experiments exploiting a variable interlayer coupling on nanocircuits are scarce due to the experimental difficulties. Here, we demonstrate a novel method to tune the interlayer coupling using hydrostatic pressure by incorporating van der Waals heterostructure based nanocircuits in piston-cylinder hydrostatic pressure cells with a dedicated sample holder design. This technique opens the way to conduct transport measurements on nanodevices under pressure using up to 12 contacts without constraints on the sample at the fabrication level. Using transport measurements, we demonstrate that a hexagonal boron nitride capping layer provides a good protection of van der Waals heterostructures from the influence of the pressure medium, and we show experimental evidence of the influence of pressure on the interlayer coupling using weak localization measurements on a transitional metal dichalcogenide/graphene heterostructure.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Schönenberger, Christian and Zihlmann, Simon and Indolese, David and Makk, Peter
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:AIP Publishing
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:07 Apr 2022 12:50
Deposited On:07 Apr 2022 12:50

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