Journal ArticleDOI
One-dimensional electrical contact to a two-dimensional material.
Lei Wang,Inanc Meric,Pinshane Y. Huang,Qun Gao,Yuanda Gao,Helen Tran,Takashi Taniguchi,Kenji Watanabe,Luis M. Campos,David A. Muller,Jing Guo,Philip Kim,James Hone,Kenneth L. Shepard,Cory Dean,Cory Dean +15 more
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TLDR
In graphene heterostructures, the edge-contact geometry provides new design possibilities for multilayered structures of complimentary 2D materials, and enables high electronic performance, including low-temperature ballistic transport over distances longer than 15 micrometers, and room-tem temperature mobility comparable to the theoretical phonon-scattering limit.Abstract:
Heterostructures based on layering of two-dimensional (2D) materials such as graphene and hexagonal boron nitride represent a new class of electronic devices. Realizing this potential, however, depends critically on the ability to make high-quality electrical contact. Here, we report a contact geometry in which we metalize only the 1D edge of a 2D graphene layer. In addition to outperforming conventional surface contacts, the edge-contact geometry allows a complete separation of the layer assembly and contact metallization processes. In graphene heterostructures, this enables high electronic performance, including low-temperature ballistic transport over distances longer than 15 micrometers, and room-temperature mobility comparable to the theoretical phonon-scattering limit. The edge-contact geometry provides new design possibilities for multilayered structures of complimentary 2D materials.read more
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Correlated Insulating and Superconducting States in Twisted Bilayer Graphene Below the Magic Angle
Emilio Codecido,Qiyue Wang,Ryan Koester,Shi Che,Haidong Tian,Rui Lv,Son Tran,Kenji Watanabe,Takashi Taniguchi,Fan Zhang,Marc Bockrath,Chun Ning Lau +11 more
TL;DR: In this article, the Mott-like insulating state was observed in twisted bilayer graphene (tBLG) devices with a twist angle of approximately 0.93, which is smaller than the magic angle.
Journal ArticleDOI
Exfoliation of natural van der Waals heterostructures to a single unit cell thickness
Matěj Velický,Peter S. Toth,Alexander M. Rakowski,A. P. Rooney,Aleksey Kozikov,Colin R. Woods,Artem Mishchenko,Laura Fumagalli,Jun Yin,Viktor Zólyomi,Thanasis Georgiou,Sarah J. Haigh,Kostya S. Novoselov,Robert A. W. Dryfe +13 more
TL;DR: Mechanical exfoliation is utilized to produce a two-dimensional form of a mineral franckeite and it is shown that the phase segregation of chemical species into discrete layers at the sub-nanometre scale facilitates franckeites' layered structure and basal cleavage down to a single unit cell thickness.
Journal ArticleDOI
Phonon Polaritons and Hyperbolic Response in van der Waals Materials
Journal ArticleDOI
Flexible Graphene Solution-Gated Field-Effect Transistors: Efficient Transducers for Micro-Electrocorticography
Clément Hébert,Eduard Masvidal-Codina,Alejandro Suarez‐Perez,Andrea Bonaccini Calia,Gaëlle Piret,Ramon Garcia-Cortadella,Xavi Illa,Elena Garcia,José Morales Sánchez,Damia Viana Casals,Elisabet Prats-Alfonso,Jessica Bousquet,Philippe Godignon,Blaise Yvert,Rosa Villa,Maria V. Sanchez-Vives,Anton Guimerà-Brunet,Jose A. Garrido +17 more
TL;DR: In this article, the operation of solution-gated field-effect transistors (SGFETs) and characterizing their performance in saline solution were discussed and compared with the performance of state-of-the-art neural technologies.
Journal ArticleDOI
Quantum coherent control of a hybrid superconducting circuit made with graphene-based van der Waals heterostructures
Joel I-Jan Wang,Daniel Rodan-Legrain,Landry Bretheau,Daniel Campbell,Bharath Kannan,David Kim,Morten Kjaergaard,Philip Krantz,Gabriel Samach,Fei Yan,Jonilyn Yoder,Kenji Watanabe,Takashi Taniguchi,Terry P. Orlando,Simon Gustavsson,Pablo Jarillo-Herrero,William D. Oliver +16 more
TL;DR: In this article, a superconducting circuit incorporating graphene-based Josephson junctions is shown to be able to operate as a voltage-tunable transmon qubit, whose spectrum reflects the electronic properties of massless Dirac fermions traveling ballistically.
References
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Journal ArticleDOI
Van der Waals heterostructures
TL;DR: With steady improvement in fabrication techniques and using graphene’s springboard, van der Waals heterostructures should develop into a large field of their own.
Journal ArticleDOI
Boron nitride substrates for high-quality graphene electronics
Cory Dean,Andrea Young,Inanc Meric,Changgu Lee,Lei Wang,Sebastian Sorgenfrei,Kenji Watanabe,Takashi Taniguchi,Philip Kim,Kenneth L. Shepard,James Hone +10 more
TL;DR: Graphene devices on h-BN substrates have mobilities and carrier inhomogeneities that are almost an order of magnitude better than devices on SiO(2).
Book
Electronic transport in mesoscopic systems
TL;DR: In this article, preliminary concepts of conductance from transmission, S-matrix and Green's function formalism are discussed. And double-barrier tunnelling is considered.
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