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Topology of chalcogen chains

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dc.abstract.enWe investigate the topological properties of the helical atomic chains occurring in elemental selenium and tellurium. We postulate a realistic model that includes spin-orbit interaction and show this to be topologically nontrivial, with a topological invariant protected by a crystalline symmetry. We describe the end-states, which are orbitally polarized, with an orbital density modulation strongly peaked at the edge. Furthermore, we propose a simplified model that decomposes into three orbital chains, allowing us to define a topological invariant protected by a crystalline symmetry. We contrast this result with recent observations made for the orbital Su-Schrieffer-Heeger model containing a p-orbital zigzag chain.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWohlfeld, Krzysztof
dc.contributor.authorWezel, Jasper van
dc.contributor.authorOleś, Andrzej
dc.contributor.authorAgrapidis, Clioˈ Efthimia
dc.contributor.authorLau, Alexander
dc.contributor.authorBrzezicki, Wojciech
dc.contributor.authorKłosiński, Adam
dc.date.accessioned2024-01-26T10:54:34Z
dc.date.available2024-01-26T10:54:34Z
dc.date.issued2023
dc.description.financePublikacja bezkosztowa
dc.description.number125123
dc.description.volume107
dc.identifier.doi10.1103/PHYSREVB.107.125123
dc.identifier.issn2469-9950
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/123495
dc.identifier.weblinkhttps://link.aps.org/article/10.1103/PhysRevB.107.125123
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofPhysical Review B
dc.relation.pages1-12
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleTopology of chalcogen chains
dc.typeJournalArticle
dspace.entity.typePublication