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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Analyzing the Carrier Mobility in Transition-metal Dichalcogenide MoS2 Field-effect Transistors
TL;DR: In this article, the authors introduce a theoretical model that quantitatively captures the scaling of mobility with temperature, carrier density and thickness of transition-metal dichalcogenides (TMDCs).
Journal ArticleDOI
Decoupling superconductivity and correlated insulators in twisted bilayer graphene
TL;DR: In this paper, it was shown that superconductivity can appear without correlated insulating states in bilayer graphene and that correlated insulators, superconducting, and ferromagnetic states have all been observed at partial band filling.
Journal ArticleDOI
Structure, Properties and Applications of Two-Dimensional Hexagonal Boron Nitride.
Soumyabrata Roy,Xiang Zhang,Anand B. Puthirath,Ashokkumar Meiyazhagan,Sohini Bhattacharyya,Muhammad M. Rahman,Ganguli Babu,Sandhya Susarla,Sreehari K. Saju,Mai Kim Tran,Lucas M. Sassi,M. A. S. R. Saadi,Jiawei Lai,Onur Sahin,Seyed Mohammad Sajadi,Bhuvaneswari Dharmarajan,Devashish Salpekar,Nithya Chakingal,Abhijit Baburaj,Xinting Shuai,Aparna Adumbumkulath,Kristen A. Miller,Jessica M Gayle,Alec Ajnsztajn,Thibeorchews Prasankumar,Vijay Vedhan Jayanthi Harikrishnan,Ved Ojha,Harikishan Kannan,Ali Zein Khater,Zhenwei Zhu,Sathvik Ajay Iyengar,Pedro A. S. Autreto,Pedro A. S. Autreto,Eliezer Fernando Oliveira,Eliezer Fernando Oliveira,Guanhui Gao,A. Glen Birdwell,Mahesh R. Neupane,Tony Ivanov,Jaime Taha-Tijerina,Jaime Taha-Tijerina,Jaime Taha-Tijerina,Ram Manohar Yadav,Sivaram Arepalli,Robert Vajtai,Pulickel M. Ajayan +45 more
TL;DR: In this paper, the structural, electrical, mechanical, optical, and thermal properties of 2D hexagonal boron nitride (h-BN) have been extensively studied.
Journal ArticleDOI
Tunable mid-infrared coherent perfect absorption in a graphene meta-surface
Yuancheng Fan,Zhe Liu,Fuli Zhang,Qian Zhao,Zeyong Wei,Quanhong Fu,Junjie Li,Changzhi Gu,Hongqiang Li +8 more
TL;DR: It was shown that quasi-CPA frequencies, at which CPA can be demonstrated with proper phase modulations, exist for the grapheme meta-surface with strong resonant behaviors, and it was found that the graphene nanoribbon meta- surface based CPA is realizable with experimentally achievable graphene sample.
Journal ArticleDOI
Tunable correlation-driven symmetry breaking in twisted double bilayer graphene
Minhao He,Yuhao Li,Jiaqi Cai,Yang Liu,Kenji Watanabe,T. Taniguchi,Xiaodong Xu,Matthew Yankowitz +7 more
TL;DR: In this paper, electrical transport measurements of twisted double bilayer graphene (tDBG) have been carried out to elucidate the fundamental role of spontaneous symmetry breaking within its correlated phase diagram.
References
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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.
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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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