Moire-Induced Transport in CVD-Based Small-Angle Twisted Bilayer Graphene

被引：6

作者：

Piccinini, Giulia ^{[1
,2
]}

Miseikis, Vaidotas ^{[2
,3
]}

Novelli, Pietro ^{[4
]}

Watanabe, Kenji ^{[5
]}

Taniguchi, Takashi ^{[6
]}

Polini, Marco ^{[3
,7
]}

Coletti, Camilla ^{[2
,3
]}

Pezzini, Sergio ^{[8
,9
]}

机构：

[1] Scuola Normale Super Pisa, NEST, I-56127 Pisa, Italy

[2] Ist Italiano Tecnol, Ctr Nanotechnol Innovat NEST, I-56127 Pisa, Italy

[3] Ist Italiano Tecnol, Graphene Labs, I-16163 Genoa, Italy

[4] Ist Italiano Tecnol, I-16152 Genoa, Italy

[5] Natl Inst Mat Sci, Res Ctr Funct Mat, Tsukuba 3050044, Japan

[6] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba 3050044, Japan

[7] Dipartimento Fis, Univ Pisa, I-56127 Pisa, Italy

[8] Ist Nanosci, NEST, CNR, I-56127 Pisa, Italy

[9] Scuola Normale Super Pisa, I-56127 Pisa, Italy

来源：

NANO LETTERS | 2022年 / 22卷 / 13期

关键词：

Twisted bilayer graphene; chemical vapor deposition; van der Waals assembly; moire superlattice; DIRAC FERMIONS; SUPERCONDUCTIVITY; CRYSTALS; STATES;

D O I：

10.1021/acs.nanolett.2c01114

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To realize the applicative potential of 2D twistronic devices, scalable synthesis and assembly techniques need to meet stringent requirements in terms of interface cleanness and twist-angle homogeneity. Here, we show that small-angle twisted bilayer graphene assembled from separated CVD-grown graphene single-crystals can ensure high-quality transport properties, determined by a device-scale-uniform moire potential. Via low-temperature dual-gated magnetotransport, we demonstrate the hallmarks of a 2.4 degrees-twisted superlattice, including tunable regimes of interlayer coupling, reduced Fermi velocity, large interlayer capacitance, and density-independent Brown-Zak oscillations. The observation of these moire-induced electrical transport features establishes CVD-based twisted bilayer graphene as an alternative to "tear-and-stack" exfoliated flakes for fundamental studies, while serving as a proof-of-concept for future large-scale assembly.

引用

页码：5252 / 5259

页数：8

共 71 条

[1] Production and processing of graphene and related materials [J].

Backes, Claudia ;

Abdelkader, Amr M. ;

Alonso, Concepcion ;

Andrieux-Ledier, Amandine ;

Arenal, Raul ;

Azpeitia, Jon ;

Balakrishnan, Nilanthy ;

Banszerus, Luca ;

Barjon, Julien ;

Bartali, Ruben ;

Bellani, Sebastiano ;

Berger, Claire ;

Berger, Reinhard ;

Ortega, M. M. Bernal ;

Bernard, Carlo ;

Beton, Peter H. ;

Beyer, Andre ;

Bianco, Alberto ;

Boggild, Peter ;

Bonaccorso, Francesco ;

Barin, Gabriela Borin ;

Botas, Cristina ;

Bueno, Rebeca A. ;

Carriazo, Daniel ;

Castellanos-Gomez, Andres ;

Christian, Meganne ;

Ciesielski, Artur ;

Ciuk, Tymoteusz ;

Cole, Matthew T. ;

Coleman, Jonathan ;

Coletti, Camilla ;

Crema, Luigi ;

Cun, Huanyao ;

Dasler, Daniela ;

De Fazio, Domenico ;

Diez, Noel ;

Drieschner, Simon ;

Duesberg, Georg S. ;

Fasel, Roman ;

Feng, Xinliang ;

Fina, Alberto ;

Forti, Stiven ;

Galiotis, Costas ;

Garberoglio, Giovanni ;

Garcia, Jorge M. ;

Antonio Garrido, Jose ;

Gibertini, Marco ;

Goelzhaeuser, Armin ;

Gomez, Julio ;

Greber, Thomas .

2D MATERIALS, 2020, 7 (02)

[2] Ultrahigh-mobility graphene devices from chemical vapor deposition on reusable copper [J].

Banszerus, Luca ;

Schmitz, Michael ;

Engels, Stephan ;

Dauber, Jan ;

Oellers, Martin ;

Haupt, Federica ;

Watanabe, Kenji ;

Taniguchi, Takashi ;

Beschoten, Bernd ;

Stampfer, Christoph .

SCIENCE ADVANCES, 2015, 1 (06)

[3] Long-range ballistic transport of Brown-Zak fermions in graphene superlattices [J].

Barrier, Julien ;

Kumaravadivel, Piranavan ;

Kumar, Roshan Krishna ;

Ponomarenko, L. A. ;

Xin, Na ;

Holwill, Matthew ;

Mullan, Ciaran ;

Kim, Minsoo ;

Gorbachev, R., V ;

Thompson, M. D. ;

Prance, J. R. ;

Taniguchi, T. ;

Watanabe, K. ;

Grigorieva, I., V ;

Novoselov, K. S. ;

Mishchenko, A. ;

Fal'ko, V., I ;

Geim, A. K. ;

Berdyugin, A., I .

NATURE COMMUNICATIONS, 2020, 11 (01)

[4] Minibands in twisted bilayer graphene probed by magnetic focusing [J].

Berdyugin, A., I ;

Tsim, B. ;

Kumaravadivel, P. ;

Xu, S. G. ;

Ceferino, A. ;

Knothe, A. ;

Kumar, R. Krishna ;

Taniguchi, T. ;

Watanabe, K. ;

Geim, A. K. ;

Grigorieva, I., V ;

Fal'ko, V., I .

SCIENCE ADVANCES, 2020, 6 (16)

[5] Theory of cross quantum capacitance [J].

Berthod, Christophe ;

Zhang, Haijing ;

Morpurgo, Alberto F. ;

Giamarchi, Thierry .

PHYSICAL REVIEW RESEARCH, 2021, 3 (04)

[6] Moire bands in twisted double-layer graphene [J].

Bistritzer, Rafi ;

MacDonald, Allan H. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2011, 108 (30) :12233-12237

[7] Superlattice-Induced Insulating States and Valley-Protected Orbits in Twisted Bilayer Graphene [J].

Cao, Y. ;

Luo, J. Y. ;

Fatemi, V. ;

Fang, S. ;

Sanchez-Yamagishi, J. D. ;

Watanabe, K. ;

Taniguchi, T. ;

Kaxiras, E. ;

Jarillo-Herrero, P. .

PHYSICAL REVIEW LETTERS, 2016, 117 (11)

[8] Correlated insulator behaviour at half-filling in magic-angle graphene superlattices [J].

Cao, Yuan ;

Fatemi, Valla ;

Demir, Ahmet ;

Fang, Shiang ;

Tomarken, Spencer L. ;

Luo, Jason Y. ;

Sanchez-Yamagishi, Javier D. ;

Watanabe, Kenji ;

Taniguchi, Takashi ;

Kaxiras, Efthimios ;

Ashoori, Ray C. ;

Jarillo-Herrero, Pablo .

NATURE, 2018, 556 (7699) :80-+

[9] Unconventional superconductivity in magic-angle graphene superlattices [J].

Cao, Yuan ;

Fatemi, Valla ;

Fang, Shiang ;

Watanabe, Kenji ;

Taniguchi, Takashi ;

Kaxiras, Efthimios ;

Jarillo-Herrero, Pablo .

NATURE, 2018, 556 (7699) :43-+

[10] Twistronics: Manipulating the electronic properties of two-dimensional layered structures through their twist angle [J].

Carr, Stephen ;

Massatt, Daniel ;

Fang, Shiang ;

Cazeaux, Paul ;

Luskin, Mitchell ;

Kaxiras, Efthimios .

PHYSICAL REVIEW B, 2017, 95 (07)

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