Electronic nematic correlations in the stress-free tetragonal state of BaFe2−xNixAs2

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dc.citation.firstpage134521en_US
dc.citation.issueNumber13en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber92en_US
dc.contributor.authorMan, Haoranen_US
dc.contributor.authorLu, Xingyeen_US
dc.contributor.authorChen, Justin S.en_US
dc.contributor.authorZhang, Ruien_US
dc.contributor.authorZhang, Wenliangen_US
dc.contributor.authorLuo, Huiqianen_US
dc.contributor.authorKulda, J.en_US
dc.contributor.authorIvanov, A.en_US
dc.contributor.authorKeller, T.en_US
dc.contributor.authorMorosan, Emiliaen_US
dc.contributor.authorSi, Qimiaoen_US
dc.contributor.authorDai, Pengchengen_US
dc.date.accessioned2016-06-10T19:01:57Zen_US
dc.date.available2016-06-10T19:01:57Zen_US
dc.date.issued2015en_US
dc.description.abstractWe use transport and neutron scattering to study electronic, structural, and magnetic properties of the electron-doped BaFe2−xNixAs2 iron pnictides in uniaxial-strained and external-stress-free detwinned states. Using a specially designed in situ mechanical detwinning device, we demonstrate that the in-plane resistivity anisotropy observed in the uniaxial-strained tetragonal state of BaFe2−xNixAs2 below a temperature T∗, previously identified as a signature of the electronic nematic phase, is also present in the stress-free tetragonal phase below T**(<T∗). By carrying out neutron scattering measurements on BaFe2As2 and BaFe1.97Ni0.03As2, we argue that the resistivity anisotropy in the stress-free tetragonal state of iron pnictides arises from the magnetoelastic coupling associated with antiferromagnetic order. These results thus indicate that the local lattice distortion and nematic spin correlations are responsible for the resistivity anisotropy in the tetragonal state of stress-free iron pnictides, and suggest that resistivity anisotropy, spin excitation anisotropy, and orbital ordering found in the paramagnetic state of uniaxial-strained iron pnictides are due to the externally applied uniaxial strain via an enhanced nematic susceptibility.en_US
dc.identifier.citationMan, Haoran, Lu, Xingye, Chen, Justin S., et al.. "Electronic nematic correlations in the stress-free tetragonal state of BaFe2−xNixAs2." <i>Physical Review B,</i> 92, no. 13 (2015) American Physical Society: 134521. http://dx.doi.org/10.1103/PhysRevB.92.134521.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.92.134521en_US
dc.identifier.urihttps://hdl.handle.net/1911/90498en_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.titleElectronic nematic correlations in the stress-free tetragonal state of BaFe2−xNixAs2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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