Spin excitation anisotropy in the optimally isovalent-doped superconductor BaFe2(As0.7P0.3)2

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dc.citation.articleNumber180503(R)en_US
dc.citation.issueNumber18en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber96en_US
dc.contributor.authorHu, Dingen_US
dc.contributor.authorZhang, Wenliangen_US
dc.contributor.authorWei, Yuanen_US
dc.contributor.authorRoessli, Bertranden_US
dc.contributor.authorSkoulatos, Markosen_US
dc.contributor.authorRegnault, Louis Pierreen_US
dc.contributor.authorChen, Genfuen_US
dc.contributor.authorSong, Yuen_US
dc.contributor.authorLuo, Huiqianen_US
dc.contributor.authorLi, Shiliangen_US
dc.contributor.authorDai, Pengchengen_US
dc.date.accessioned2017-12-21T18:21:52Zen_US
dc.date.available2017-12-21T18:21:52Zen_US
dc.date.issued2017en_US
dc.description.abstractWe use neutron polarization analysis to study spin excitation anisotropy in the optimally isovalent-doped superconductor BaFe2(As0.7P0.3)2 (Tc=30 K). Different from optimally hole- and electron-doped BaFe2As2, where there is a clear spin excitation anisotropy in the paramagnetic tetragonal state well above Tc, we find no spin excitation anisotropy for energies above 2 meV in the normal state of BaFe2(As0.7P0.3)2. Upon entering the superconducting state, significant spin excitation anisotropy develops at the antiferromagnetic (AF) zone center QAF=(1,0,L=odd), while the magnetic spectrum is isotropic at the zone boundary Q=(1,0,L=even). By comparing the temperature, wave vector, and polarization dependence of the spin excitation anisotropy in BaFe2(As0.7P0.3)2 and hole-doped Ba0.67K0.33Fe2As2 (Tc=38 K), we conclude that such anisotropy arises from spin-orbit coupling and is associated with the nearby AF order and superconductivity.en_US
dc.identifier.citationHu, Ding, Zhang, Wenliang, Wei, Yuan, et al.. "Spin excitation anisotropy in the optimally isovalent-doped superconductor BaFe2(As0.7P0.3)2." <i>Physical Review B,</i> 96, no. 18 (2017) American Physical Society: https://doi.org/10.1103/PhysRevB.96.180503.en_US
dc.identifier.digitalPhysRevB-96-180503en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.96.180503en_US
dc.identifier.urihttps://hdl.handle.net/1911/98914en_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 excitation anisotropy in the optimally isovalent-doped superconductor BaFe2(As0.7P0.3)2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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