Spin excitations in optimally P-dopedﾠBaFe2(As0.7P0.3)2 superconductor

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dc.citation.articleNumber94504en_US
dc.citation.issueNumber9en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber94en_US
dc.contributor.authorHu, Dingen_US
dc.contributor.authorYin, Zhipingen_US
dc.contributor.authorZhang, Wenliangen_US
dc.contributor.authorEwings, R.A.en_US
dc.contributor.authorIkeuchi, Kazuhikoen_US
dc.contributor.authorNakamura, Mitsutakaen_US
dc.contributor.authorRoessli, Bertranden_US
dc.contributor.authorWei, Yuanen_US
dc.contributor.authorZhao, Lingxiaoen_US
dc.contributor.authorChen, Genfuen_US
dc.contributor.authorLi, Shiliangen_US
dc.contributor.authorLuo, Huiqianen_US
dc.contributor.authorHaule, Kristjanen_US
dc.contributor.authorKotliar, Gabrielen_US
dc.contributor.authorDai, Pengchengen_US
dc.date.accessioned2016-11-22T15:16:07Zen_US
dc.date.available2016-11-22T15:16:07Zen_US
dc.date.issued2016en_US
dc.description.abstractWe use inelastic neutron scattering to study the temperature and energy dependence of spin excitations in an optimally P-doped BaFe2(As0.7P0.3)2 superconductor (Tc=30 K) throughout the Brillouin zone. In the undoped state, spin waves and paramagnetic spin excitations of BaFe2As2stem from an antiferromagnetic (AF) ordering wave vector QAF=(±1,0), and peak near the zone boundary at (±1,±1) around 180 meV. Replacing 30% As by smaller P to induce superconductivity, low-energy spin excitations of BaFe2(As0.7P0.3)2 form a resonance in the superconducting state and high-energy spin excitations now peak around 220 meV near (±1,±1). These results are consistent with calculations from a combined density functional theory and dynamical mean field theory, and suggest that the decreased average pnictogen height in BaFe2(As0.7P0.3)2 reduces the strength of electron correlations and increases the effective bandwidth of magnetic excitations.en_US
dc.identifier.citationHu, Ding, Yin, Zhiping, Zhang, Wenliang, et al.. "Spin excitations in optimally P-dopedﾠBaFe2(As0.7P0.3)2 superconductor." <i>Physical Review B,</i> 94, no. 9 (2016) American Physical Society: http://dx.doi.org/10.1103/PhysRevB.94.094504.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.94.094504en_US
dc.identifier.urihttps://hdl.handle.net/1911/92720en_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.titleSpin excitations in optimally P-dopedﾠBaFe2(As0.7P0.3)2 superconductoren_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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