Twisted bilayer graphene fabricated by direct bonding in a high vacuum

Hitoshi Imamura; Anton Visikovskiy; Ryosuke Uotani; Takashi Kajiwara; Hiroshi Ando; Takushi Iimori; Kota Iwata; Toshio Miyamachi; Kan Nakatsuji; Kazuhiko Mase; Tetsuroh Shirasawa; Fumio Komori; Satoru Tanaka

doi:10.35848/1882-0786/ab99d1

Twisted bilayer graphene fabricated by direct bonding in a high vacuum

Hitoshi Imamura, Anton Visikovskiy, Ryosuke Uotani, Takashi Kajiwara, Hiroshi Ando, Takushi Iimori, Kota Iwata, Toshio Miyamachi, Kan Nakatsuji, Kazuhiko Mase, Tetsuroh Shirasawa, Fumio Komori, Satoru Tanaka

Applied Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Twisted bilayer graphene (TBG), in which two monolayer graphene are stacked with an in-plane rotation angle, has recently become a hot topic due to unique electronic structures. TBG is normally produced in air by the tear-and-stack method of mechanical exfoliation and transferring graphene flakes, by which a sizable, millimeter-order area, and importantly clean interface between layers are hard to obtain. In this study, we resolved these problems by directly transferring the easy-to-exfoliate CVD-grown graphene on SiC substrate to graphene in a high vacuum without using any transfer assisting medium and observed electronic band modulations due to the strong interlayer coupling.

Original language	English
Article number	075004
Journal	Applied Physics Express
Volume	13
Issue number	7
DOIs	https://doi.org/10.35848/1882-0786/ab99d1
Publication status	Published - Jul 1 2020

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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10.35848/1882-0786/ab99d1

Cite this

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abstract = "Twisted bilayer graphene (TBG), in which two monolayer graphene are stacked with an in-plane rotation angle, has recently become a hot topic due to unique electronic structures. TBG is normally produced in air by the tear-and-stack method of mechanical exfoliation and transferring graphene flakes, by which a sizable, millimeter-order area, and importantly clean interface between layers are hard to obtain. In this study, we resolved these problems by directly transferring the easy-to-exfoliate CVD-grown graphene on SiC substrate to graphene in a high vacuum without using any transfer assisting medium and observed electronic band modulations due to the strong interlayer coupling.",

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AU - Imamura, Hitoshi

AU - Visikovskiy, Anton

AU - Uotani, Ryosuke

AU - Kajiwara, Takashi

AU - Ando, Hiroshi

AU - Iimori, Takushi

AU - Iwata, Kota

AU - Miyamachi, Toshio

AU - Nakatsuji, Kan

AU - Mase, Kazuhiko

AU - Shirasawa, Tetsuroh

AU - Komori, Fumio

AU - Tanaka, Satoru

PY - 2020/7/1

Y1 - 2020/7/1

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AB - Twisted bilayer graphene (TBG), in which two monolayer graphene are stacked with an in-plane rotation angle, has recently become a hot topic due to unique electronic structures. TBG is normally produced in air by the tear-and-stack method of mechanical exfoliation and transferring graphene flakes, by which a sizable, millimeter-order area, and importantly clean interface between layers are hard to obtain. In this study, we resolved these problems by directly transferring the easy-to-exfoliate CVD-grown graphene on SiC substrate to graphene in a high vacuum without using any transfer assisting medium and observed electronic band modulations due to the strong interlayer coupling.

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Twisted bilayer graphene fabricated by direct bonding in a high vacuum

Abstract

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