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arXiv · 2206.05401

Dual-gated hBN/bilayer-graphene superlattices and the transitions between the insulating phases at the charge neutrality point

Takuya Iwasaki·Yoshifumi Morita·Kenji Watanabe·Takashi Taniguchi
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Abstract

We report on transport properties in dual-gated hexagonal boron nitride (hBN)/bilayer-graphene (BLG) superlattices. Here, BLG is nontwisted, i.e., plain. This paper focuses on the charge neutrality point (CNP) for a plain BLG. Under a perpendicular magnetic field, transitions between two insulating phases at the CNP are detected by varying a displacement field with the study on the resistance-temperature characteristics and the magnetoresistance. This work opens avenues for exploring the global phase diagram of the hBN/BLG superlattices beyond the CNP.

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Takuya Iwasaki, Yoshifumi Morita, Kenji Watanabe, Takashi Taniguchi. 2022-06-11. Dual-gated hBN/bilayer-graphene superlattices and the transitions between the insulating phases at the charge neutrality point. https://doi.org/10.1103/physrevb.106.165134

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