Possible Mott transition in layered Sr2Mn3As2O2ﾠsingle crystals

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dc.citation.articleNumber144423ﾠen_US
dc.citation.issueNumber14en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber99en_US
dc.contributor.authorChen, Chih-Weien_US
dc.contributor.authorWang, Weiyien_US
dc.contributor.authorLoganathan, Vaideeshen_US
dc.contributor.authorCarr, Scott V.en_US
dc.contributor.authorHarriger, Leland W.en_US
dc.contributor.authorGeorgen, C.en_US
dc.contributor.authorNevidomskyy, Andriy H.en_US
dc.contributor.authorDai, Pengchengen_US
dc.contributor.authorHuang, C.-L.en_US
dc.contributor.authorMorosan, E.en_US
dc.date.accessioned2019-08-13T15:19:41Zen_US
dc.date.available2019-08-13T15:19:41Zen_US
dc.date.issued2019en_US
dc.description.abstractSingle crystals of Sr2Mn3As2O2 have been grown for the first time, for which we show a possible layer-selective Mott insulator behavior. This compound stands out as a hybrid structure of MnO2 and MnAs layers, analogously to the active CuO2 and FeAs layers, respectively, in the cuprate and iron-based high-temperature superconductors. Electrical transport, neutron diffraction measurements, together with density functional theory calculations on Sr2Mn3As2O2 single crystals converge toward a picture of independent magnetic order at T1∼79 K and T2∼360 K for the two Mn sublattices, with insulating behavior at odds with the metallic behavior predicted by calculations. Furthermore, our inelastic neutron-scattering studies of spin-wave dispersions for the Mn(1) sublattice reveal an effective magnetic exchange coupling of SJ∼3.7 meV. This is much smaller than those for the Mn(2) sublattice.en_US
dc.identifier.citationChen, Chih-Wei, Wang, Weiyi, Loganathan, Vaideesh, et al.. "Possible Mott transition in layered Sr2Mn3As2O2ﾠsingle crystals." <i>Physical Review B,</i> 99, no. 14 (2019) American Physical Society: https://doi.org/10.1103/PhysRevB.99.144423.en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.99.144423en_US
dc.identifier.urihttps://hdl.handle.net/1911/106232en_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.titlePossible Mott transition in layered Sr2Mn3As2O2ﾠsingle crystalsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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