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Ultrafast electronic response of graphene to a strong and localized electric field
The way conduction electrons respond to ultrafast external perturbations in low dimensional materials is at the core of the design of future devices for (opto)electronics, photodetection and spintronics. Highly charged ions provide a tool for probing the electronic response of solids to extremely st...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5187589/ https://www.ncbi.nlm.nih.gov/pubmed/28000666 http://dx.doi.org/10.1038/ncomms13948 |
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author | Gruber, Elisabeth Wilhelm, Richard A. Pétuya, Rémi Smejkal, Valerie Kozubek, Roland Hierzenberger, Anke Bayer, Bernhard C. Aldazabal, Iñigo Kazansky, Andrey K. Libisch, Florian Krasheninnikov, Arkady V. Schleberger, Marika Facsko, Stefan Borisov, Andrei G. Arnau, Andrés Aumayr, Friedrich |
author_facet | Gruber, Elisabeth Wilhelm, Richard A. Pétuya, Rémi Smejkal, Valerie Kozubek, Roland Hierzenberger, Anke Bayer, Bernhard C. Aldazabal, Iñigo Kazansky, Andrey K. Libisch, Florian Krasheninnikov, Arkady V. Schleberger, Marika Facsko, Stefan Borisov, Andrei G. Arnau, Andrés Aumayr, Friedrich |
author_sort | Gruber, Elisabeth |
collection | PubMed |
description | The way conduction electrons respond to ultrafast external perturbations in low dimensional materials is at the core of the design of future devices for (opto)electronics, photodetection and spintronics. Highly charged ions provide a tool for probing the electronic response of solids to extremely strong electric fields localized down to nanometre-sized areas. With ion transmission times in the order of femtoseconds, we can directly probe the local electronic dynamics of an ultrathin foil on this timescale. Here we report on the ability of freestanding single layer graphene to provide tens of electrons for charge neutralization of a slow highly charged ion within a few femtoseconds. With values higher than 10(12) A cm(−2), the resulting local current density in graphene exceeds previously measured breakdown currents by three orders of magnitude. Surprisingly, the passing ion does not tear nanometre-sized holes into the single layer graphene. We use time-dependent density functional theory to gain insight into the multielectron dynamics. |
format | Online Article Text |
id | pubmed-5187589 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51875892017-01-03 Ultrafast electronic response of graphene to a strong and localized electric field Gruber, Elisabeth Wilhelm, Richard A. Pétuya, Rémi Smejkal, Valerie Kozubek, Roland Hierzenberger, Anke Bayer, Bernhard C. Aldazabal, Iñigo Kazansky, Andrey K. Libisch, Florian Krasheninnikov, Arkady V. Schleberger, Marika Facsko, Stefan Borisov, Andrei G. Arnau, Andrés Aumayr, Friedrich Nat Commun Article The way conduction electrons respond to ultrafast external perturbations in low dimensional materials is at the core of the design of future devices for (opto)electronics, photodetection and spintronics. Highly charged ions provide a tool for probing the electronic response of solids to extremely strong electric fields localized down to nanometre-sized areas. With ion transmission times in the order of femtoseconds, we can directly probe the local electronic dynamics of an ultrathin foil on this timescale. Here we report on the ability of freestanding single layer graphene to provide tens of electrons for charge neutralization of a slow highly charged ion within a few femtoseconds. With values higher than 10(12) A cm(−2), the resulting local current density in graphene exceeds previously measured breakdown currents by three orders of magnitude. Surprisingly, the passing ion does not tear nanometre-sized holes into the single layer graphene. We use time-dependent density functional theory to gain insight into the multielectron dynamics. Nature Publishing Group 2016-12-21 /pmc/articles/PMC5187589/ /pubmed/28000666 http://dx.doi.org/10.1038/ncomms13948 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Gruber, Elisabeth Wilhelm, Richard A. Pétuya, Rémi Smejkal, Valerie Kozubek, Roland Hierzenberger, Anke Bayer, Bernhard C. Aldazabal, Iñigo Kazansky, Andrey K. Libisch, Florian Krasheninnikov, Arkady V. Schleberger, Marika Facsko, Stefan Borisov, Andrei G. Arnau, Andrés Aumayr, Friedrich Ultrafast electronic response of graphene to a strong and localized electric field |
title | Ultrafast electronic response of graphene to a strong and localized electric field |
title_full | Ultrafast electronic response of graphene to a strong and localized electric field |
title_fullStr | Ultrafast electronic response of graphene to a strong and localized electric field |
title_full_unstemmed | Ultrafast electronic response of graphene to a strong and localized electric field |
title_short | Ultrafast electronic response of graphene to a strong and localized electric field |
title_sort | ultrafast electronic response of graphene to a strong and localized electric field |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5187589/ https://www.ncbi.nlm.nih.gov/pubmed/28000666 http://dx.doi.org/10.1038/ncomms13948 |
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