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dc.contributor.authorVianez, Pedro MT
dc.contributor.authorJin, Yiqing
dc.contributor.authorMoreno, María
dc.contributor.authorAnirban, Ankita S
dc.contributor.authorAnthore, Anne
dc.contributor.authorTan, Wooi Kiat
dc.contributor.authorGriffiths, Jonathan P
dc.contributor.authorFarrer, Ian
dc.contributor.authorRitchie, David A
dc.contributor.authorSchofield, Andrew J
dc.contributor.authorTsyplyatyev, Oleksandr
dc.contributor.authorFord, Christopher JB
dc.date.accessioned2022-06-21T23:30:06Z
dc.date.available2022-06-21T23:30:06Z
dc.date.issued2022-06-17
dc.identifier.issn2375-2548
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/338262
dc.description.abstractAn electron is usually considered to have only one form of kinetic energy, but could it have more, for its spin and charge, by exciting other electrons? In one dimension (1D), the physics of interacting electrons is captured well at low energies by the Tomonaga-Luttinger model, yet little has been observed experimentally beyond this linear regime. Here, we report on measurements of many-body modes in 1D gated wires using tunneling spectroscopy. We observe two parabolic dispersions, indicative of separate Fermi seas at high energies, associated with spin and charge excitations, together with the emergence of two additional 1D "replica" modes that strengthen with decreasing wire length. The interaction strength is varied by changing the amount of 1D intersubband screening by more than 45%. Our findings not only demonstrate the existence of spin-charge separation in the whole energy band outside the low-energy limit of the Tomonaga-Luttinger model but also set a constraint on the validity of the newer nonlinear Tomonaga-Luttinger theory.
dc.publisherAmerican Association for the Advancement of Science (AAAS)
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectcond-mat.mes-hall
dc.subjectcond-mat.mes-hall
dc.subjectcond-mat.str-el
dc.subjectphysics.app-ph
dc.subjectquant-ph
dc.titleObserving separate spin and charge Fermi seas in a strongly correlated one-dimensional conductor.
dc.typeArticle
dc.publisher.departmentDepartment of Physics
dc.date.updated2022-04-12T13:55:11Z
prism.publicationNameSci Adv
dc.identifier.doi10.17863/CAM.85670
dcterms.dateAccepted2022-04-08
rioxxterms.versionofrecord10.1126/sciadv.abm2781
rioxxterms.versionVoR
rioxxterms.licenseref.urihttps://www.rioxx.net/licenses/all-rights-reserved/
dc.contributor.orcidVianez, Pedro MT [0000-0003-2245-6108]
dc.contributor.orcidAnirban, Ankita S [0000-0002-9294-3115]
dc.contributor.orcidGriffiths, Jonathan P [0000-0002-6933-7707]
dc.contributor.orcidFarrer, Ian [0000-0002-3033-4306]
dc.contributor.orcidRitchie, David A [0000-0002-9844-8350]
dc.contributor.orcidSchofield, Andrew J [0000-0002-1218-8560]
dc.contributor.orcidTsyplyatyev, Oleksandr [0000-0002-2081-6547]
dc.contributor.orcidFord, Christopher JB [0000-0002-4557-3721]
dc.identifier.eissn2375-2548
rioxxterms.typeArticle
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/K004077/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/J01690X/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/D008506/1)
pubs.funder-project-idEPSRC (1948695)
pubs.funder-project-idDeutsche Forschungsgemeinschaft (461313466)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/N509620/1)
cam.issuedOnline2022-06-17
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.81347
cam.depositDate2022-04-12
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International