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Resonant tunnelling into the two-dimensional subbands of InSe layers
journal contribution
posted on 2020-01-29, 16:50 authored by Zakhar R Kudrynskyi, James Kerfoot, Debarati Mazumder, Mark GreenawayMark Greenaway, Evgeni E Vdovin, Oleg Makarovsky, Zakhar D Kovalyuk, Laurence Eaves, Peter H Beton, Amalia PatanèTwo-dimensional (2D) van der Waals (vdW) crystals have attracted considerable interest for digital electronics beyond Si-based complementary metal oxide semiconductor technologies. Despite the transformative success of Si-based devices, there are limits to their miniaturization and functionalities. Here we realize a resonant tunnelling transistor (RTT) based on a 2D InSe layer sandwiched between two multilayered graphene (MLG) electrodes. In the RTT the energy of the quantum-confined 2D subbands of InSe can be tuned by the thickness of the InSe layer. By applying a voltage across the two MLG electrodes, which serve as the source and drain electrodes to the InSe, the chemical potential in the source can be tuned in and out of resonance with a given 2D subband, leading to multiple regions of negative differential conductance that can be additionally tuned by electrostatic gating. This work demonstrates the potential of InSe and InSe-based RTTs for applications in quantum electronics.
Funding
Engineering and Physical Sciences Research Council [grant numbers EP/M012700/1 and EP/N033906/1]
European Union’s Horizon 2020 research and innovation programme Graphene Flagship Core 2 under grant agreement number 785219
Defence Science and Technology Laboratory (Dstl)
University of Nottingham
The National Academy of Sciences of Ukraine
The Leverhulme Trust [RF-2017–224]
The Royal Society [IE160395]
Russian Science Foundation (17–12–01393)
Chinese Academy of Sciences (CAS) for the Award of a “President’s International Fellowship for Visiting Scientists”
History
School
- Science
Department
- Physics
Published in
Communications PhysicsVolume
3Publisher
Nature Research (part of Springer Nature)Version
- VoR (Version of Record)
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© The AuthorsPublisher statement
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.Acceptance date
2020-01-07Publication date
2020-01-21Copyright date
2020eISSN
2399-3650Publisher version
Language
- en
Depositor
Dr Mark Greenaway. Deposit date: 29 January 2020Article number
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