Mott localization in a pure stripe antiferromagnet Rb1−δFe1.5−σS2

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dc.citation.firstpage121101(R)en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber92en_US
dc.contributor.authorWang, Mengen_US
dc.contributor.authorYi, Mingen_US
dc.contributor.authorCao, Huiboen_US
dc.contributor.authorde la Cruz, C.en_US
dc.contributor.authorMo, S.K.en_US
dc.contributor.authorHuang, Q.Z.en_US
dc.contributor.authorBourret-Courchesne, E.en_US
dc.contributor.authorDai, Pengchengen_US
dc.contributor.authorLee, D.H.en_US
dc.contributor.authorShen, Z.X.en_US
dc.contributor.authorBirgeneau, R.J.en_US
dc.date.accessioned2016-06-10T19:50:42Zen_US
dc.date.available2016-06-10T19:50:42Zen_US
dc.date.issued2015en_US
dc.description.abstractA combination of neutron diffraction and angle-resolved photoemission spectroscopy measurements on a pure antiferromagnetic stripe Rb1−δFe1.5−σS2 is reported. A neutron diffraction experiment on a powder sample shows that a 98% volume fraction of the sample is in the antiferromagnetic stripe phase with rhombic iron vacancy order and a refined composition of Rb0.66Fe1.36S2, and that only 2% of the sample is in the block antiferromagnetic phase with 5√×5√ iron vacancy order. Furthermore, a neutron diffraction experiment on a single crystal shows that there is only a single phase with the stripe antiferromagnetic order with the refined composition of Rb0.78Fe1.35S2, while the phase with block antiferromagnetic order is absent. Angle-resolved photoemission spectroscopy measurements on the same crystal with the pure stripe phase reveal that the electronic structure is gapped at the Fermi level with a gap larger than 0.325 eV. The data collectively demonstrate that the extra 10% iron vacancies in addition to the rhombic iron vacancy order effectively impede the formation of the block antiferromagnetic phase; the data also suggest that the stripe antiferromagnetic phase with rhombic iron vacancy order is a Mott insulator.en_US
dc.identifier.citationWang, Meng, Yi, Ming, Cao, Huibo, et al.. "Mott localization in a pure stripe antiferromagnet Rb1−δFe1.5−σS2." <i>Physical Review B,</i> 92, no. 12 (2015) American Physical Society: 121101(R). http://dx.doi.org/10.1103/PhysRevB.92.121101.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.92.121101en_US
dc.identifier.urihttps://hdl.handle.net/1911/90499en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleMott localization in a pure stripe antiferromagnet Rb1−δFe1.5−σS2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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