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https://hdl.handle.net/10356/138037
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DC Field | Value | Language |
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dc.contributor.author | Ma, Qiong | en_US |
dc.contributor.author | Lui, Chun Hung | en_US |
dc.contributor.author | Song, Justin Chien Wen | en_US |
dc.contributor.author | Lin, Yuxuan | en_US |
dc.contributor.author | Kong, Jian Feng | en_US |
dc.contributor.author | Cao, Yuan | en_US |
dc.contributor.author | Dinh, Thao H. | en_US |
dc.contributor.author | Nair, Nityan L. | en_US |
dc.contributor.author | Fang, Wenjing | en_US |
dc.contributor.author | Watanabe, Kenji | en_US |
dc.contributor.author | Taniguchi, Takashi | en_US |
dc.contributor.author | Xu, Su-Yang | en_US |
dc.contributor.author | Kong, Jing | en_US |
dc.contributor.author | Palacios, Tomás | en_US |
dc.contributor.author | Gedik, Nuh | en_US |
dc.contributor.author | Gabor, Nathaniel M. | en_US |
dc.contributor.author | Jarillo-Herrero, Pablo | en_US |
dc.date.accessioned | 2020-04-22T06:07:01Z | - |
dc.date.available | 2020-04-22T06:07:01Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Ma, Q., Lui, C.H., Song, J.C.W., Lin, Y., Long, J. F., Cao, Y., . . . Jarillo-Herrero, P. (2019). Giant intrinsic photoresponse in pristine graphene. Nature Nanotechnology, 14(2), 145–150. doi:10.1038/s41565-018-0323-8 | en_US |
dc.identifier.issn | 1748-3387 | en_US |
dc.identifier.uri | https://hdl.handle.net/10356/138037 | - |
dc.description.abstract | When the Fermi level is aligned with the Dirac point of graphene, reduced charge screening greatly enhances electron-electron scattering1-5. In an optically excited system, the kinematics of electron-electron scattering in Dirac fermions is predicted to give rise to novel optoelectronic phenomena6-11. In this paper, we report on the observation of an intrinsic photocurrent in graphene, which occurs in a different parameter regime from all the previously observed photothermoelectric or photovoltaic photocurrents in graphene12-20: the photocurrent emerges exclusively at the charge neutrality point, requiring no finite doping. Unlike other photocurrent types that are enhanced near p-n or contact junctions, the photocurrent observed in our work arises near the edges/corners. By systematic data analyses, we show that the phenomenon stems from the unique electron-electron scattering kinematics in charge-neutral graphene. Our results not only highlight the intriguing electron dynamics in the optoelectronic response of Dirac fermions, but also offer a new scheme for photodetection and energy harvesting applications based on intrinsic, charge-neutral Dirac fermions. | en_US |
dc.description.sponsorship | NRF (Natl Research Foundation, S’pore) | en_US |
dc.language.iso | en | en_US |
dc.relation.ispartof | Nature Nanotechnology | en_US |
dc.rights | © 2018 The Author(s). All rights reserved. This paper was published by Springer Nature Limited in Nature Nanotechnology and is made available with permission of The Author(s). | en_US |
dc.subject | Science::Physics | en_US |
dc.title | Giant intrinsic photoresponse in pristine graphene | en_US |
dc.type | Journal Article | en |
dc.contributor.school | School of Physical and Mathematical Sciences | en_US |
dc.contributor.organization | Institute of High Performance Computing, A*STAR | en_US |
dc.identifier.doi | 10.1038/s41565-018-0323-8 | - |
dc.description.version | Accepted version | en_US |
dc.identifier.pmid | 30559484 | - |
dc.identifier.scopus | 2-s2.0-85058858137 | - |
dc.identifier.issue | 2 | en_US |
dc.identifier.volume | 14 | en_US |
dc.identifier.spage | 145 | en_US |
dc.identifier.epage | 150 | en_US |
dc.subject.keywords | Graphene | en_US |
dc.subject.keywords | Electrons | en_US |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
Appears in Collections: | SPMS Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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Giant Intrinsic Photoresponse In Pristine Graphene.pdf | 1.74 MB | Adobe PDF | View/Open |
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