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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Aharonov-Bohm effect in graphene-based Fabry–Pérot quantum Hall interferometers
Yuval Ronen,Thomas Werkmeister,Danial Haie Najafabadi,Andrew T. Pierce,Laurel E. Anderson,Young Jae Shin,Si Young Lee,Young Hee Lee,Bobae Johnson,Kenji Watanabe,Takashi Taniguchi,Amir Yacoby,Philip Kim +12 more
TL;DR: In this paper, a tunable, graphene-based Fabry-Perot (FP) quantum Hall interferometer is proposed to reveal the exchange statistics of anyonic quasi-particles in the fractional quantum Hall effect (FQHE).
Journal ArticleDOI
Commensurability Oscillations in One-Dimensional Graphene Superlattices.
Martin Drienovsky,Jonas Joachimsmeyer,Andreas Sandner,Ming-Hao Liu,Takashi Taniguchi,Kenji Watanabe,Klaus Richter,Dieter Weiss,Jonathan Eroms +8 more
TL;DR: Comparison to existing theories shows that small-angle scattering is dominant in hBN/graphene/hBN heterostructures, and robust COs persisting to temperatures exceeding T=150 K are observed.
Journal ArticleDOI
Sound waves and resonances in electron-hole plasma
TL;DR: In this article, the behavior of hydrodynamic sound modes in quasirelativistic fluids near charge neutrality, within linear response, was investigated, and the robustness of this signal to various effects, including electron-acoustic phonon coupling, disorder, and long-range Coulomb interactions.
Journal ArticleDOI
Locally hydrazine doped WSe2 p-n junction toward high-performance photodetectors.
TL;DR: Good current-rectifying characteristics, including a high rectification ratio of ∼103, have been observed; this indicates that a high-quality p-n junction has been formed by chemical doping.
Journal ArticleDOI
Imaging and control of critical fluctuations in two-dimensional magnets
TL;DR: In this paper, a fast and sensitive magneto-optical imaging microscope was developed to achieve wide-field, real-time monitoring of critical magnetization fluctuations in single-layer ferromagnetic insulator CrBr3.
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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