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dc.contributor.authorWild, A
dc.contributor.authorMariani, E
dc.contributor.authorPortnoi, ME
dc.date.accessioned2023-11-07T09:16:06Z
dc.date.issued2023-11-06
dc.date.updated2023-11-06T21:03:16Z
dc.description.abstractQuasiparticles emerging in crystalline materials can possess a binary flavor known as the valley quantum number which can be used as a basis to encode information in an emerging class of valleytronic devices. Here we show that two-dimensional semimetals with tilted Dirac cones in the electronic band structure exhibit spatial separation of carriers belonging to different valleys under illumination. In stark contrast to gapped Dirac materials this optovalleytronic phenomenon occurs in systems with intact inversion and time-reversal symmetry that host gapless Dirac cones in the band structure, thereby retaining the exceptional graphene-like transport properties. We thus demonstrate that optical valley separation is possible at arbitrarily low photon frequencies including the deep infrared and terahertz regimes with full gate tunability via Pauli blocking. As a specific example of our theory, we predict tunable valley separation in the proposed two-dimensional tilted Dirac cone semimetal 8-Pmmn borophene for incident infrared photons at room temperature. This work highlights the potential of two-dimensional tilted Dirac cone materials as a platform for tunable broadband optovalleytronic applications.en_GB
dc.description.sponsorshipEuropean Union Horizon 2020en_GB
dc.description.sponsorshipNATOen_GB
dc.description.sponsorshipEngineering and Physical Sciences Research Council (EPSRC)en_GB
dc.description.sponsorshipRoyal Societyen_GB
dc.format.extent19211-1-19211-10
dc.identifier.citationVol. 13, article 19211en_GB
dc.identifier.doihttps://doi.org/10.1038/s41598-023-45940-4
dc.identifier.grantnumber823878en_GB
dc.identifier.grantnumber823728en_GB
dc.identifier.grantnumberNATO.SPS.MYP.G5860en_GB
dc.identifier.grantnumber2239575en_GB
dc.identifier.grantnumberIEC/R2/192166en_GB
dc.identifier.urihttp://hdl.handle.net/10871/134447
dc.identifierORCID: 0000-0001-5618-0993 (Portnoi, Mikhail)
dc.identifierScopusID: 7005697142 (Portnoi, Mikhail)
dc.identifierResearcherID: E-1923-2011 (Portnoi, Mikhail)
dc.language.isoenen_GB
dc.publisherNature Researchen_GB
dc.rights© The Author(s) 2023. Open Access. 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 licence, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.en_GB
dc.titleOptical valley separation in two-dimensional semimetals with tilted Dirac conesen_GB
dc.typeArticleen_GB
dc.date.available2023-11-07T09:16:06Z
dc.identifier.issn2045-2322
dc.descriptionThis is the final version. Available on open access from Nature Research via the DOI in this recorden_GB
dc.descriptionData availability: All data generated or analysed during this study are included in this published article and its supplementary information files.en_GB
dc.identifier.journalScientific Reportsen_GB
dc.relation.ispartofScientific Reports, 13
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_GB
dcterms.dateAccepted2023-10-26
dcterms.dateSubmitted2023-08-04
rioxxterms.versionVoRen_GB
rioxxterms.licenseref.startdate2023-11-06
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2023-11-06T21:03:20Z
refterms.versionFCDEVoR
refterms.dateFOA2023-11-07T09:16:07Z
refterms.panelBen_GB
refterms.dateFirstOnline2023-11-06


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© The Author(s) 2023. Open Access. 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 licence, and indicate if changes were made. Te images or other third party material in this 
article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the 
material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.
Except where otherwise noted, this item's licence is described as © The Author(s) 2023. Open Access. 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 licence, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.