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dc.contributor.authorBigi, Chiara
dc.contributor.authorPakdel, Sahar
dc.contributor.authorWiniarski, Michał J.
dc.contributor.authorOrgiani, Pasquale
dc.contributor.authorVobornik, Ivana
dc.contributor.authorFujii, Jun
dc.contributor.authorRossi, Giorgio
dc.contributor.authorPolewczyk, Vincent
dc.contributor.authorKing, Phil D. C.
dc.contributor.authorPanaccione, Giancarlo
dc.contributor.authorKlimczuk, Tomasz
dc.contributor.authorThygesen, Kristian Sommer
dc.contributor.authorMazzola, Federico
dc.identifier.citationBigi , C , Pakdel , S , Winiarski , M J , Orgiani , P , Vobornik , I , Fujii , J , Rossi , G , Polewczyk , V , King , P D C , Panaccione , G , Klimczuk , T , Thygesen , K S & Mazzola , F 2023 , ' The electronic structure of intertwined kagome, honeycomb, and triangular sublattices of the intermetallics MCo 2 Al 9 (M = Sr, Ba) ' , Physical Review. B, Condensed matter and materials physics , vol. 108 , no. 7 , 075148 .
dc.identifier.otherPURE: 292989767
dc.identifier.otherPURE UUID: 31ffbee2-67f4-499d-bba6-613f7c7513b8
dc.identifier.otherScopus: 85169297386
dc.descriptionFunding: CB and PDCK gratefully acknowledge support from The Leverhulme Trust via Grant No. RL-2016-006. F.M. greatly acknowledges the SoE action of pnrr, number SOE 0000068. K.S.T and S.P. acknowledge funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program Grant No. 773122 (LIMA). K.S.T. is a Villum Investigator supported by VILLUM FONDEN (grant no. 37789).en
dc.description.abstractIntermetallics are an important playground to stabilize a large variety of physical phenomena, arising from their complex crystal structure. The ease of their chemical tunabilty makes them suitable platforms to realize targeted electronic properties starting from the symmetries hidden in their unit cell. Here, we investigate the family of the recently discovered intermetallics M Co2Al9 (M = Sr, Ba) and we unveil their electronic structure. By using angle-resolved photoelectron spectroscopy and density functional theory calculations, we discover the existence of Dirac-like dispersions as ubiquitous features in this family, coming from the hidden kagome and honeycomb symmetries embedded in the unit cell. Finally, from calculations, we expect that the spin-orbit coupling is responsible for opening energy gaps in the electronic structure spectrum, which also affects the majority of the observed Dirac-like states. Our study constitutes an experimental observation of the electronic structure of M Co2Al9 and proposes these systems as hosts of Dirac-like physics with intrinsic spin-orbit coupling. The latter effect suggests M Co2Al9 as a future platform for investigating the emergence of nontrivial topology.
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rightsCopyright © 2023 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleThe electronic structure of intertwined kagome, honeycomb, and triangular sublattices of the intermetallics MCo2Al9 (M = Sr, Ba)en
dc.typeJournal articleen
dc.contributor.sponsorThe Leverhulme Trusten
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Designer Quantum Materialsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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