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Article Dans Une Revue Nano Letters Année : 2019

Synthetic Semimetals with van der Waals Interfaces

Résumé

The assembly of suitably designed van der Waals (vdW) heterostructures represents a new approach to produce artificial systems with engineered electronic properties. Here, we apply this strategy to realize synthetic semimetals based on vdW interfaces formed by two different semiconductors. Guided by existing ab-initio calculations, we select WSe 2 and SnSe 2 mono and multilayers to assemble vdW interfaces, and demonstrate the occurrence of semimetallicity by means of different transport experiments. Semimetallicity manifests itself in a finite minimum conductance upon sweeping the gate over a large range in ionic liquid gated devices, which also offer spectroscopic capabilities enabling the quantitative determination of the band overlap. The semimetallic 1
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Dates et versions

hal-02889251 , version 1 (17-11-2020)

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Bojja Aditya Reddy, Evgeniy Ponomarev, Ignacio Gutiérrez-Lezama, Nicolas Ubrig, Céline Barreteau, et al.. Synthetic Semimetals with van der Waals Interfaces. Nano Letters, 2019, 20 (2), pp.1322-1328. ⟨10.1021/acs.nanolett.9b04810⟩. ⟨hal-02889251⟩
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