In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors
We study the in-plane electronic anisotropy in the parent compounds of several families of Fe-based superconductors (BaFe_{2}As_{2}, EuFe_{2}As_{2}, NaFeAs, LiFeAs, FeSe, and LaFeAsO) by polarization-resolved Raman scattering. We measure intensity of the fully symmetric c-axis vibration of As atom m...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-07-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033140 |
| _version_ | 1827286035520815104 |
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| author | S.-F. Wu W.-L. Zhang V. K. Thorsmølle G. F. Chen G. T. Tan P. C. Dai Y. G. Shi C. Q. Jin T. Shibauchi S. Kasahara Y. Matsuda A. S. Sefat H. Ding P. Richard G. Blumberg |
| author_facet | S.-F. Wu W.-L. Zhang V. K. Thorsmølle G. F. Chen G. T. Tan P. C. Dai Y. G. Shi C. Q. Jin T. Shibauchi S. Kasahara Y. Matsuda A. S. Sefat H. Ding P. Richard G. Blumberg |
| author_sort | S.-F. Wu |
| collection | DOAJ |
| description | We study the in-plane electronic anisotropy in the parent compounds of several families of Fe-based superconductors (BaFe_{2}As_{2}, EuFe_{2}As_{2}, 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. |
| first_indexed | 2024-04-24T10:24:45Z |
| format | Article |
| id | doaj.art-4e8aa227e3234947b4d030cbae09503d |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:24:45Z |
| publishDate | 2020-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-4e8aa227e3234947b4d030cbae09503d2024-04-12T16:57:46ZengAmerican Physical SocietyPhysical Review Research2643-15642020-07-012303314010.1103/PhysRevResearch.2.033140In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductorsS.-F. WuW.-L. ZhangV. K. ThorsmølleG. F. ChenG. T. TanP. C. DaiY. G. ShiC. Q. JinT. ShibauchiS. KasaharaY. MatsudaA. S. SefatH. DingP. RichardG. BlumbergWe study the in-plane electronic anisotropy in the parent compounds of several families of Fe-based superconductors (BaFe_{2}As_{2}, EuFe_{2}As_{2}, 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.http://doi.org/10.1103/PhysRevResearch.2.033140 |
| spellingShingle | S.-F. Wu W.-L. Zhang V. K. Thorsmølle G. F. Chen G. T. Tan P. C. Dai Y. G. Shi C. Q. Jin T. Shibauchi S. Kasahara Y. Matsuda A. S. Sefat H. Ding P. Richard G. Blumberg In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors Physical Review Research |
| title | In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors |
| title_full | In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors |
| title_fullStr | In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors |
| title_full_unstemmed | In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors |
| title_short | In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors |
| title_sort | in plane electronic anisotropy resulted from ordered magnetic moment in iron based superconductors |
| url | http://doi.org/10.1103/PhysRevResearch.2.033140 |
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