dc.contributor.author
Wieder, Benjamin J.
dc.contributor.author
Wang, Zhijun
dc.contributor.author
Cano, Jennifer
dc.contributor.author
Dai, Xi
dc.contributor.author
Schoop, Leslie M.
dc.contributor.author
Bradlyn, Barry
dc.contributor.author
Bernevig, B. Andrei
dc.date.accessioned
2020-03-24T10:49:51Z
dc.date.available
2020-03-24T10:49:51Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/27009
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-26770
dc.description.abstract
Dirac and Weyl semimetals both exhibit arc-like surface states. However, whereas the surface Fermi arcs in Weyl semimetals are topological consequences of the Weyl points themselves, the surface Fermi arcs in Dirac semimetals are not directly related to the bulk Dirac points, raising the question of whether there exists a topological bulk-boundary correspondence for Dirac semimetals. In this work, we discover that strong and fragile topological Dirac semimetals exhibit one-dimensional (1D) higher-order hinge Fermi arcs (HOFAs) as universal, direct consequences of their bulk 3D Dirac points. To predict HOFAs coexisting with topological surface states in solid-state Dirac semimetals, we introduce and layer a spinful model of an s–d-hybridized quadrupole insulator (QI). We develop a rigorous nested Jackiw–Rebbi formulation of QIs and HOFA states. Employing ab initio calculations, we demonstrate HOFAs in both the room- (α) and intermediate-temperature (α″) phases of Cd3As2, KMgBi, and rutile-structure (β′-) PtO2.
en
dc.format.extent
13 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
electronic properties
en
dc.subject
electronic materials
en
dc.subject
topological insulators
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Strong and fragile topological Dirac semimetals with higher-order Fermi arcs
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
627
dcterms.bibliographicCitation.doi
10.1038/s41467-020-14443-5
dcterms.bibliographicCitation.journaltitle
Nature Communications
dcterms.bibliographicCitation.volume
11
dcterms.bibliographicCitation.url
https://doi.org/10.1038/s41467-020-14443-5
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2041-1723
refubium.resourceType.provider
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