Nematic Crossover in BaFe2As2 under Uniaxial Stress

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dc.citation.firstpage197002en_US
dc.citation.issueNumber19en_US
dc.citation.journalTitlePhysical Review Lettersen_US
dc.citation.volumeNumber115en_US
dc.contributor.authorRen, Xiaoen_US
dc.contributor.authorDuan, Lianen_US
dc.contributor.authorHu, Yuwenen_US
dc.contributor.authorLi, Jiaruien_US
dc.contributor.authorZhang, Ruien_US
dc.contributor.authorLuo, Huiqianen_US
dc.contributor.authorDai, Pengchengen_US
dc.contributor.authorLi, Yuanen_US
dc.date.accessioned2016-06-10T18:07:38Z
dc.date.available2016-06-10T18:07:38Z
dc.date.issued2015en_US
dc.description.abstractRaman scattering can detect spontaneous point-group symmetry breaking without resorting to single-domain samples. Here, we use this technique to study BaFe2As2, the parent compound of the “122” Fe-based superconductors. We show that an applied compression along the Fe-Fe direction, which is commonly used to produce untwinned orthorhombic samples, changes the structural phase transition at temperature Ts into a crossover that spans a considerable temperature range above Ts. Even in crystals that are not subject to any applied force, a distribution of substantial residual stress remains, which may explain phenomena that are seemingly indicative of symmetry breaking above Ts. Our results are consistent with an onset of spontaneous nematicity only below Ts.en_US
dc.identifier.citationRen, Xiao, Duan, Lian, Hu, Yuwen, et al.. "Nematic Crossover in BaFe2As2 under Uniaxial Stress." <i>Physical Review Letters,</i> 115, no. 19 (2015) American Physical Society: 197002. http://dx.doi.org/10.1103/PhysRevLett.115.197002.
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevLett.115.197002en_US
dc.identifier.urihttps://hdl.handle.net/1911/90485
dc.language.isoengen_US
dc.publisherAmerican Physical Society
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.
dc.titleNematic Crossover in BaFe2As2 under Uniaxial Stressen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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