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Mesoscopic Klein-Schwinger effect in graphene

hal.structure.identifierPhysique Mésoscopique
dc.contributor.authorSCHMITT, A.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorVALLET, P.
hal.structure.identifierPhysique Mésoscopique
hal.structure.identifierCarbon - IEMN [CARBON - IEMN]
dc.contributor.authorMELE, D.
hal.structure.identifierLaboratoire de physique de l'ENS - ENS Paris [LPENS]
dc.contributor.authorROSTICHER, M.
hal.structure.identifierNational Institute for Materials Science [NIMS]
dc.contributor.authorTANIGUCHI, T.
hal.structure.identifierNational Institute for Materials Science [NIMS]
dc.contributor.authorWATANABE, K.
hal.structure.identifierPhysikalisches Institut [Köln]
dc.contributor.authorBOCQUILLON, E.
hal.structure.identifierPhysique Mésoscopique
dc.contributor.authorFÈVE, G.
hal.structure.identifierPhysique Mésoscopique
dc.contributor.authorBERROIR, Jean-Marc
hal.structure.identifierNano-Optique
dc.contributor.authorVOISIN, C.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorCAYSSOL, J.
hal.structure.identifierLaboratoire de Physique des Solides [LPS]
dc.contributor.authorGOERBIG, M.
hal.structure.identifierChamps, Gravitation et Cordes
dc.contributor.authorTROOST, J.
hal.structure.identifierNano-Optique
dc.contributor.authorBAUDIN, E.
hal.structure.identifierPhysique Mésoscopique
dc.contributor.authorPLAÇAIS, Bernard
dc.date2023
dc.date.issued2023
dc.identifier.issn1745-2473
dc.description.abstractEnStrong electric field annihilation by particle–antiparticle pair creation, also known as the Schwinger effect, is a non-perturbative prediction of quantum electrodynamics. Its experimental demonstration remains elusive, as threshold electric fields are extremely strong and beyond current reach. Here, we propose a mesoscopic variant of the Schwinger effect in graphene, which hosts Dirac fermions with an approximate electron–hole symmetry. Using transport measurements, we report on universal one-dimensional Schwinger conductance at the pinchoff of ballistic graphene transistors. Strong pinchoff electric fields are concentrated within approximately 1 μm of the transistor’s drain and induce Schwinger electron–hole pair creation at saturation. This effect precedes a collective instability towards an ohmic Zener regime, which is rejected at twice the pinchoff voltage in long devices. These observations advance our understanding of current saturation limits in ballistic graphene and provide a direction for further quantum electrodynamic experiments in the laboratory.
dc.description.sponsorshipUniversity of Bordeaux Graduate Scholl in Light Sciences & Technologies
dc.language.isoen
dc.publisherNature Publishing Group
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enMesoscopic Klein-Schwinger effect in graphene
dc.typeArticle de revue
dc.identifier.doi10.1038/s41567-023-01978-9
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]
dc.identifier.arxiv2207.13400
dc.description.sponsorshipEuropeGraphene Flagship Core Project 3
bordeaux.journalNature Physics
bordeaux.peerReviewedoui
hal.identifierhal-04035853
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04035853v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature%20Physics&rft.date=2023&rft.eissn=1745-2473&rft.issn=1745-2473&rft.au=SCHMITT,%20A.&VALLET,%20P.&MELE,%20D.&ROSTICHER,%20M.&TANIGUCHI,%20T.&rft.genre=article


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