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
Reads0
Chats0
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
Citations
More filters
Journal ArticleDOI
Realistic Metal–Graphene Contact Structures
Cheng Gong,Stephen McDonnell,Xiaoye Qin,Angelica Azcatl,Hong Dong,Yves J. Chabal,Kyeongjae Cho,Robert M. Wallace +7 more
TL;DR: In situ X-ray photoelectron spectroscopy is used to study the wetting of metals on as-synthesized graphene on copper foil and validates the spontaneous formation of the metal-graphene end-contact during the metal deposition process as a result of theMetal- graphene reaction instead of a simple carbon diffusion process.
Journal ArticleDOI
Composite fermions and broken symmetries in graphene
Francois Amet,Andrew Bestwick,James R. Williams,L. Balicas,Kenji Watanabe,Takashi Taniguchi,David Goldhaber-Gordon +6 more
TL;DR: Amet et al. as discussed by the authors observed previously unseen states in boron-nitride-graphene heterostructures in a strong magnetic field that indicate the formation of composite fermions.
Journal ArticleDOI
Controlled Synthesis of Organic/Inorganic van der Waals Solid for Tunable Light-Matter Interactions.
Lin Niu,Xinfeng Liu,Chunxiao Cong,Chunyang Wu,Di Wu,Tay-Rong Chang,Hong Wang,Qingsheng Zeng,Jiadong Zhou,Xingli Wang,Wei Fu,Peng Yu,Qundong Fu,Sina Najmaei,Zhuhua Zhang,Boris I. Yakobson,Beng Kang Tay,Wu Zhou,Horng-Tay Jeng,Hsin Lin,Tze Chien Sum,Chuanhong Jin,Haiyong He,Ting Yu,Zheng Liu +24 more
TL;DR: In this article, high quality organic and inorganic van der Waals (vdW) solids are realized using methylammonium lead halide (CH3 NH3 PbI3 ) as the organic part (organic perovskite) and 2D inorganic monolayers as counterparts.
Journal ArticleDOI
Macroscopic self-reorientation of interacting two-dimensional crystals
Colin R. Woods,Freddie Withers,Mengjian Zhu,Yang Cao,Geliang Yu,Aleksey Kozikov,M. Ben Shalom,Sergey V. Morozov,Sergey V. Morozov,M. M. van Wijk,Annalisa Fasolino,Mikhail I. Katsnelson,Kenji Watanabe,Takashi Taniguchi,Andre K. Geim,Artem Mishchenko,K. S. Novoselov +16 more
TL;DR: Graphene mechanically self-rotating towards the hexagonal boron nitride crystallographic directions is demonstrated, which is macroscopic and can be used for reproducible manufacturing of aligned van der Waals heterostructures.
Journal ArticleDOI
A valley valve and electron beam splitter.
Jing Li,Rui-Xing Zhang,Zhenxi Yin,Jianxiao Zhang,Kenji Watanabe,Takashi Taniguchi,Chao-Xing Liu,Jun Zhu +7 more
TL;DR: In this paper, the authors demonstrate gate-controlled current transmission in a four-kink router device and a waveguide, a valve, and a tunable electron beam splitter with an on/off ratio of 8 at zero magnetic field.
References
More filters
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.
Journal ArticleDOI