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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Electrical detection of hyperbolic phonon-polaritons in heterostructures of graphene and boron nitride
Achim Woessner,Romain Parret,Diana Davydovskaya,Yuanda Gao,Jhih-Sheng Wu,Mark B. Lundeberg,Sebastien Nanot,Pablo Alonso-González,Kenji Watanabe,Takashi Taniguchi,Rainer Hillenbrand,Rainer Hillenbrand,Michael M. Fogler,James Hone,Frank H. L. Koppens,Frank H. L. Koppens +15 more
TL;DR: In this paper, the authors demonstrate electrical detection of hyperbolic phonons-polaritons by guiding them towards a graphene pn junction, where the light from a laser beam, shone on a heterostructure of monolayer graphene encapsulated in hexagonal boron nitride, is converted to Hyperbolic Phonon-Polarite.
Journal ArticleDOI
Recent advances of atomically thin 2D heterostructures in sensing applications
Zhong Li,Zhong Li,Zhong Li,Zhengjun Yao,Azhar Ali Haidry,Yange Luan,Yange Luan,Yongli Chen,Bao Yue Zhang,Bao Yue Zhang,Kai Xu,Ruixiang Deng,Nguyen Duc Hoa,Jintang Zhou,Jian Zhen Ou,Jian Zhen Ou +15 more
TL;DR: In this article, the authors comprehensively review the state-of-the-art 2D heterostructures and present the current challenges and prospects of 2D-based sensors.
Journal ArticleDOI
Ambipolar Landau levels and strong band-selective carrier interactions in monolayer WSe$_2$
Martin V. Gustafsson,Matthew Yankowitz,Carlos Forsythe,Daniel Rhodes,Kenji Watanabe,Takashi Taniguchi,James Hone,Xiaoyang Zhu,Cory Dean +8 more
TL;DR: In this paper, the authors used single-electron transistors to perform Landau level (LL) spectroscopy in transition metal dichalcogenides (TMDs) for both electrons and holes.
Journal ArticleDOI
Propagation of superconducting coherence via chiral quantum-Hall edge channels
TL;DR: The electrical conductance characteristics via the AES formed in graphene–superconductor hybrid systems in a three-terminal configuration is reported, allowing the detection of the longitudinal and QH conductance separately, excluding the bulk contribution.
Journal ArticleDOI
Coherence and Density Dynamics of Excitons in a Single-Layer MoS2 Reaching the Homogeneous Limit
Tomasz Jakubczyk,Goutham Nayak,Lorenzo Scarpelli,Wei-Lai Liu,Sudipta Dubey,Nedjma Bendiab,Laëtitia Marty,Takashi Taniguchi,Kenji Watanabe,Francesco Masia,Gilles Nogues,Johann Coraux,Wolfgang Werner Langbein,Julien Renard,Vincent Bouchiat,Jacek Kasprzak +15 more
TL;DR: It is found that the exciton dynamics is governed by microscopic disorder on top of the ideal crystal properties, which provides stable monolayer samples with low disorder, avoiding surface contaminations and the resulting exciton broadening and modifications of the dynamics.
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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