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dc.contributor.authorWatson, Matthew D.
dc.contributor.authorAswartham, Saicharan
dc.contributor.authorRhodes, Luke
dc.contributor.authorParrett, Benjamin
dc.contributor.authorIwasawa, Hideaki
dc.contributor.authorHoesch, Moritz
dc.contributor.authorMorozov, Igor
dc.contributor.authorBüchner, Bernd
dc.contributor.authorKim, Timur
dc.identifier.citationWatson , M D , Aswartham , S , Rhodes , L , Parrett , B , Iwasawa , H , Hoesch , M , Morozov , I , Büchner , B & Kim , T 2018 , ' Three-dimensional electronic structure of the nematic and antiferromagnetic phases of NaFeAs from detwinned angle-resolved photoemission spectroscopy ' , Physical Review B , vol. 97 , no. 3 , 035134 .
dc.identifier.otherPURE: 252130748
dc.identifier.otherPURE UUID: 52b5a231-5d8d-4610-b7a5-d07d6457b612
dc.identifier.otherScopus: 85040595241
dc.identifier.otherORCID: /0000-0002-0737-2814/work/47136667
dc.identifier.otherWOS: 000423115200007
dc.descriptionWe thank Diamond Light Source for access to Beamline I05 (ProposalsNo. SI15074, No. NT18218, and No. NT15663) that contributed to the results presented here. I.M. acknowledges support by RSF Grant No. 16-42-01100.en
dc.description.abstractWe report a comprehensive angle-resolved photoemission spectroscopy study of NaFeAs, a prototypical parent compound of the Fe-based superconductors. By mechanically detwinning the samples, we show that in the nematic phase (below the structural transition at Ts=54 K but above the antiferromagnetic transition at TN=43 K) spectral weight is detected on only the elliptical electron pocket along the longer aorth axis. This dramatic anisotropy is likely to arise as a result of coupling to a fluctuating antiferromagnetic order in the nematic phase. In the long-range ordered antiferromagnetic state below TN, this single electron pocket is backfolded and hybridizes with the hole bands, leading to the reconstructed Fermi surface. By careful analysis of the kz variation, we show that the backfolding of spectral weight in the magnetic phase has a wave vector of (π,0,π), with the c-axis component being in agreement with the magnetic ordering in NaFeAs observed by neutron scattering. Our results clarify the origin of the tiny Fermi surfaces of NaFeAs at low temperatures and highlight the importance of the three-dimensional aspects of the electronic and magnetic properties of Fe-based superconductors.
dc.relation.ispartofPhysical Review Ben
dc.rights© 2018 the Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.en
dc.subjectQC Physicsen
dc.titleThree-dimensional electronic structure of the nematic and antiferromagnetic phases of NaFeAs from detwinned angle-resolved photoemission spectroscopyen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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