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- W3100348995 abstract "We study the in-plane electronic anisotropy in the parent compounds of several families of Fe-based superconductors (BaFe2As2, EuFe2As2, NaFeAs, LiFeAs, FeSe, and LaFeAsO) by polarization-resolved Raman scattering. We measure intensity of the fully symmetric c-axis vibration of As atom mode in the XY scattering geometry and notice that the mode's intensity is significantly enhanced below the magnetostructural transition only for compounds showing magnetic ordering. In particular, we find that the intensity ratio of this As phonon in the XY vs. XX scattering geometries is proportional to the square of the ordered magnetic moment. We relate this As phonon intensity enhancement below the Néel temperature in iron pnictides to in-plane electronic anisotropy induced by the collinear spin-density wave order.Received 5 December 2017Revised 30 June 2020Accepted 7 July 2020DOI:https://doi.org/10.1103/PhysRevResearch.2.033140Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasAntiferromagnetismElectron-phonon couplingSuperconductivityPhysical SystemsPnictidesUnconventional superconductorsTechniquesRaman spectroscopyCondensed Matter, Materials & Applied Physics" @default.
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- W3100348995 date "2020-07-24" @default.
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- W3100348995 title "In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors" @default.
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- W3100348995 doi "https://doi.org/10.1103/physrevresearch.2.033140" @default.
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