Electron doping evolution of structural and antiferromagnetic phase transitions in NaFe1−xCoxAs iron pnictides

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dc.citation.articleNumber14509en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber94en_US
dc.contributor.authorTan, Guotaien_US
dc.contributor.authorSong, Yuen_US
dc.contributor.authorZhang, Chenglinen_US
dc.contributor.authorLin, Lifangen_US
dc.contributor.authorXu, Zhuangen_US
dc.contributor.authorHou, Tingtingen_US
dc.contributor.authorTian, Weien_US
dc.contributor.authorCao, Huiboen_US
dc.contributor.authorLi, Shiliangen_US
dc.contributor.authorFeng, Shipingen_US
dc.contributor.authorDai, Pengchengen_US
dc.date.accessioned2016-09-30T20:52:22Zen_US
dc.date.available2016-09-30T20:52:22Zen_US
dc.date.issued2016en_US
dc.description.abstractWe use transport and neutron diffraction to study the electronic phase diagram of NaFe1−xCoxAs. In the undoped state, NaFeAs exhibits a tetragonal-to-orthorhombic structural transition below Tsfollowed by a collinear antiferromagnetic (AF) order below TN. Upon codoping to form NaFe1−xCoxAs,Ts and TN are gradually suppressed, leading to optimal superconductivity near Co-doping x=0.025. While transport experiments on these materials reveal an anomalous behavior suggesting the presence of a quantum critical point (QCP) near optimal superconductivity, our neutron diffraction results indicate that commensurate AF order becomes transversely incommensurate with TN>Tc before vanishing abruptly at optimal superconductivity. These results are remarkably similar to electron-doping and isovalent-doping evolution of the AF order in BaFe2−xNixAs2 and BaFe2(As1−xPx)2, thus suggesting a universal behavior in the suppression of the magnetic order in iron pnictides as superconductivity is induced.en_US
dc.identifier.citationTan, Guotai, Song, Yu, Zhang, Chenglin, et al.. "Electron doping evolution of structural and antiferromagnetic phase transitions in NaFe1−xCoxAs iron pnictides." <i>Physical Review B,</i> 94, no. 1 (2016) American Physical Society: http://dx.doi.org/10.1103/PhysRevB.94.014509.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.94.014509en_US
dc.identifier.urihttps://hdl.handle.net/1911/91637en_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.titleElectron doping evolution of structural and antiferromagnetic phase transitions in NaFe1−xCoxAs iron pnictidesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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