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Coherent quasiparticles with a small fermi surface in lightly doped Sr3Ir2O7

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dc.contributor.authorDe La Torre, Alberto
dc.contributor.authorHunter, E. C.
dc.contributor.authorSubedi, A.
dc.contributor.authorMcKeown Walker, Siobhan Ellen
dc.contributor.authorTamai, Anna
dc.contributor.authorKim, T. K.
dc.contributor.authorHoesch, M.
dc.contributor.authorPerry, Robin Stuart
dc.contributor.authorGeorges, A.
dc.contributor.authorBaumberger, F.
dc.date.accessioned2015-02-20T12:31:03Z
dc.date.available2015-02-20T12:31:03Z
dc.date.issued2014-12-16
dc.identifier169435742
dc.identifierf19fd73d-971a-44d0-aea6-1d590c440678
dc.identifier000348460200007
dc.identifier84919724973
dc.identifier000348460200007
dc.identifier.citationDe La Torre , A , Hunter , E C , Subedi , A , McKeown Walker , S E , Tamai , A , Kim , T K , Hoesch , M , Perry , R S , Georges , A & Baumberger , F 2014 , ' Coherent quasiparticles with a small fermi surface in lightly doped Sr 3 Ir 2 O 7 ' , Physical Review Letters , vol. 113 , no. 25 , 256402 . https://doi.org/10.1103/PhysRevLett.113.256402en
dc.identifier.issn0031-9007
dc.identifier.urihttps://hdl.handle.net/10023/6127
dc.descriptionhis work was funded by the Swiss National Science Foundation (Grant No. 200021-146995), the UK Royal Society, the UK-EPSRC, and the European Research Council (Grant No. ERC-319286 QMAC).en
dc.description.abstractWe characterize the electron doping evolution of (Sr1-xLax)3Ir2O7 by means of angle-resolved photoemission. Concomitant with the metal insulator transition around x ≈ 0.05 we find the emergence of coherent quasiparticle states forming a closed small Fermi surface of volume 3x/2, where x is the independently measured La concentration. The quasiparticle weight Z remains large along the entire Fermi surface, consistent with the moderate renormalization of the low-energy dispersion, and no pseudogap is observed. This indicates a conventional, weakly correlated Fermi liquid state with a momentum independent residue Z ≈ 0.5 in lightly doped Sr3Ir2O7.
dc.format.extent5
dc.format.extent1246442
dc.language.isoeng
dc.relation.ispartofPhysical Review Lettersen
dc.subjectSuperconductorsen
dc.subjectPhaseen
dc.subjectQC Physicsen
dc.subject.lccQCen
dc.titleCoherent quasiparticles with a small fermi surface in lightly doped Sr3Ir2O7en
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doi10.1103/PhysRevLett.113.256402
dc.description.statusPeer revieweden
dc.identifier.urlhttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.256402#supplementalen


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