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dc.contributor.authorMarkovic, Igor
dc.contributor.authorHooley, Chris
dc.contributor.authorClark, Oliver Jon
dc.contributor.authorMazzola, Federico
dc.contributor.authorWatson, Matthew David
dc.contributor.authorRiley, Jonathon Mark
dc.contributor.authorVolckaert, K
dc.contributor.authorUnderwood, Kaycee
dc.contributor.authorDyer, M
dc.contributor.authorMurgatroyd, P
dc.contributor.authorMurphy, K
dc.contributor.authorLe Fèvre, P
dc.contributor.authorBertran, F
dc.contributor.authorFujii, J
dc.contributor.authorVobornik, I
dc.contributor.authorWu, S
dc.contributor.authorOkuda, T
dc.contributor.authorAlaria, J
dc.contributor.authorKing, Phil
dc.identifier.citationMarkovic , I , Hooley , C , Clark , O J , Mazzola , F , Watson , M D , Riley , J M , Volckaert , K , Underwood , K , Dyer , M , Murgatroyd , P , Murphy , K , Le Fèvre , P , Bertran , F , Fujii , J , Vobornik , I , Wu , S , Okuda , T , Alaria , J & King , P 2019 , ' Weyl-like points from band inversions of spin-polarised surface states in NbGeSb ' , Nature Communications , vol. 10 , 5485 , pp. 1-8 .
dc.identifier.otherPURE: 262624184
dc.identifier.otherPURE UUID: bab637f7-9ba6-4cf4-93dd-f526a50de4b7
dc.identifier.otherORCID: /0000-0002-9976-2405/work/65702344
dc.identifier.otherORCID: /0000-0002-1631-9556/work/65702637
dc.identifier.otherORCID: /0000-0002-0737-2814/work/65702647
dc.identifier.otherORCID: /0000-0003-1350-6222/work/65702649
dc.identifier.otherScopus: 85076122649
dc.identifier.otherWOS: 000500481500001
dc.descriptionFunding: Leverhulme Trust (Grant No. PLP-2015-144), The Royal Society, and the Engineering and Physical Sciences Research Council, UK (Grant No. EP/R031924/1); CALIPSOplus project under Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020; International Max Planck Research School for Chemistry and Physics of Quantum Materials (IMPRS-CPQM) (I.M.); EPSRC for studentship support through grant nos. EP/K503162/1 and EP/L505079/1, and EP/L015110/1 (O.J.C., J.M.R., and K.U.).en
dc.description.abstractBand inversions are key to stabilising a variety of novel electronic states in solids, from topological surface states to the formation of symmetry-protected three-dimensional Dirac and Weyl points and nodal-line semimetals. Here, we create a band inversion not of bulk states, but rather between manifolds of surface states. We realise this by aliovalent substitution of Nb for Zr and Sb for S in the ZrSiS family of nonsymmorphic semimetals. Using angle-resolved photoemission and density-functional theory, we show how two pairs of surface states, known from ZrSiS, are driven to intersect each other near the Fermi level in NbGeSb, and to develop pronounced spin splittings. We demonstrate how mirror symmetry leads to protected crossing points in the resulting spin-orbital entangled surface band structure, thereby stabilising surface state analogues of three-dimensional Weyl points. More generally, our observations suggest new opportunities for engineering topologically and symmetry-protected states via band inversions of surface states.
dc.relation.ispartofNature Communicationsen
dc.rightsCopyright © The Author(s) 2019. 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleWeyl-like points from band inversions of spin-polarised surface states in NbGeSben
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.Centre for Designer Quantum Materialsen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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