dc.contributor.author
Laubach, Manuel
dc.contributor.author
Reuther, Johannes
dc.contributor.author
Thomale, Ronny
dc.contributor.author
Rachel, Stephan
dc.date.accessioned
2018-06-08T10:22:15Z
dc.date.available
2018-04-24T06:31:18.818Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/20304
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-23608
dc.description.abstract
Na2IrO3 was one of the first materials proposed to feature the Kane-Mele-type
topological insulator phase. Contemporaneously it was claimed that the very
same material is in a Mott insulating phase which is described by the Kitaev-
Heisenberg (KH) model. First experiments indeed revealed Mott insulating
behavior in conjunction with antiferromagnetic long-range order. Further
refined experiments established antiferromagnetic order of zigzag type which
is not captured by the KH model. Since then several extensions and
modifications of the KH model were proposed in order to describe the
experimental findings. Here we suggest that adding charge fluctuations to the
KH model represents an alternative explanation of zigzag antiferromagnetism.
Moreover, a phenomenological three-band Hubbard model unifies all the pieces
of the puzzle: topological insulator physics for weak and KH model for strong
electron-electron interactions as well as a zigzag antiferromagnet at
intermediate interaction strength.
en
dc.format.extent
6 Seiten
dc.rights.uri
http://journals.aps.org/authors/transfer-of-copyright-agreement
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik
dc.title
Three-band Hubbard model for Na2 IrO3
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation
Physical Review B. - 96 (2017), 12, Artikel Nr. 121110
dc.identifier.sepid
62125
dc.title.subtitle
Topological insulator, zigzag antiferromagnet, and Kitaev-Heisenberg material
dcterms.bibliographicCitation.doi
10.1103/PhysRevB.96.121110
dcterms.bibliographicCitation.url
http://dx.doi.org/10.1103/PhysRevB.96.121110
refubium.affiliation
Physik
de
refubium.affiliation.other
Institut für Theoretische Physik
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refubium.mycore.fudocsId
FUDOCS_document_000000029595
refubium.note.author
Bei der PDF-Datei handelt es sich um eine Manuskriptversion des Artikels.
refubium.resourceType.isindependentpub
no
refubium.mycore.derivateId
FUDOCS_derivate_000000009641
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
2469-9950