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- Publisher Website: 10.1038/s41467-018-04393-4
- Scopus: eid_2-s2.0-85047638064
- PMID: 29802292
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Article: Stark control of electrons along nanojunctions
Title | Stark control of electrons along nanojunctions |
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Authors | |
Issue Date | 2018 |
Publisher | Nature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html |
Citation | Nature Communications, 2018, v. 9 n. 1, article no. 2070 How to Cite? |
Abstract | Ultrafast control of currents on the nanoscale is essential for future innovations in nanoelectronics. Recently it was experimentally demonstrated that strong non-resonant few-cycle 4 fs laser pulses can be used to induce phase-controllable currents along gold-silica-gold nanojunctions in the absence of a bias voltage. However, since the effect depends on a highly non-equilibrium state of matter, its microscopic origin is unclear and the subject of recent controversy. Here we present atomistically detailed (time-dependent non-equilibrium Green's function) electronic transport simulations that recover the main experimental observations and offer a simple intuitive picture of the effect. The photoinduced currents are seen to arise due to a difference in effective silica-metal coupling for negative and positive field amplitudes induced by lasers with low temporal symmetry. These insights can be employed to interpret related experiments, and advance our ability to control electrons in matter using lasers. © 2018 The Author(s). |
Persistent Identifier | http://hdl.handle.net/10722/279301 |
ISSN | 2023 Impact Factor: 14.7 2023 SCImago Journal Rankings: 4.887 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chen, L | - |
dc.contributor.author | Zhang, Y | - |
dc.contributor.author | Chen, G | - |
dc.contributor.author | Franco, I | - |
dc.date.accessioned | 2019-10-25T13:53:04Z | - |
dc.date.available | 2019-10-25T13:53:04Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Nature Communications, 2018, v. 9 n. 1, article no. 2070 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/10722/279301 | - |
dc.description.abstract | Ultrafast control of currents on the nanoscale is essential for future innovations in nanoelectronics. Recently it was experimentally demonstrated that strong non-resonant few-cycle 4 fs laser pulses can be used to induce phase-controllable currents along gold-silica-gold nanojunctions in the absence of a bias voltage. However, since the effect depends on a highly non-equilibrium state of matter, its microscopic origin is unclear and the subject of recent controversy. Here we present atomistically detailed (time-dependent non-equilibrium Green's function) electronic transport simulations that recover the main experimental observations and offer a simple intuitive picture of the effect. The photoinduced currents are seen to arise due to a difference in effective silica-metal coupling for negative and positive field amplitudes induced by lasers with low temporal symmetry. These insights can be employed to interpret related experiments, and advance our ability to control electrons in matter using lasers. © 2018 The Author(s). | - |
dc.language | eng | - |
dc.publisher | Nature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html | - |
dc.relation.ispartof | Nature Communications | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Stark control of electrons along nanojunctions | - |
dc.type | Article | - |
dc.identifier.email | Chen, G: ghchen@hku.hk | - |
dc.identifier.authority | Chen, G=rp00671 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1038/s41467-018-04393-4 | - |
dc.identifier.pmid | 29802292 | - |
dc.identifier.pmcid | PMC5970263 | - |
dc.identifier.scopus | eid_2-s2.0-85047638064 | - |
dc.identifier.hkuros | 308242 | - |
dc.identifier.volume | 9 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | article no. 2070 | - |
dc.identifier.epage | article no. 2070 | - |
dc.identifier.isi | WOS:000433066900014 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 2041-1723 | - |