In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors

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

doi:10.1103/PhysRevResearch.2.033140

In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors

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

School of Arts and Sciences, New High Energy Theory Center

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

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 Neél temperature in iron pnictides to in-plane electronic anisotropy induced by the collinear spin-density wave order.

Original language	English (US)
Article number	033140
Journal	Physical Review Research
Volume	2
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevResearch.2.033140
State	Published - Jul 2020

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevResearch.2.033140

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Wu, S. F., Zhang, W. L., Thorsmølle, V. K., Chen, G. F., Tan, G. T., Dai, P. C., Shi, Y. G., Jin, C. Q., Shibauchi, T., Kasahara, S., Matsuda, Y., Sefat, A. S., Ding, H., Richard, P., & Blumberg, G. (2020). In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors. Physical Review Research, 2(3), Article 033140. https://doi.org/10.1103/PhysRevResearch.2.033140

@article{5f46ebf148404dc7a3728e209600dd35,

title = "In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors",

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 Ne{\'e}l temperature in iron pnictides to in-plane electronic anisotropy induced by the collinear spin-density wave order.",

author = "Wu, {S. F.} and Zhang, {W. L.} and Thorsm{\o}lle, {V. K.} and Chen, {G. F.} and Tan, {G. T.} and Dai, {P. C.} and Shi, {Y. G.} and Jin, {C. Q.} and T. Shibauchi and S. Kasahara and Y. Matsuda and Sefat, {A. S.} and H. Ding and P. Richard and G. Blumberg",

note = "Publisher Copyright: {\textcopyright} 2020 authors.",

year = "2020",

month = jul,

doi = "10.1103/PhysRevResearch.2.033140",

language = "English (US)",

volume = "2",

journal = "Physical Review Research",

issn = "2643-1564",

publisher = "American Physical Society",

number = "3",

}

Wu, SF, Zhang, WL, Thorsmølle, VK, Chen, GF, Tan, GT, Dai, PC, Shi, YG, Jin, CQ, Shibauchi, T, Kasahara, S, Matsuda, Y, Sefat, AS, Ding, H, Richard, P & Blumberg, G 2020, 'In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors', Physical Review Research, vol. 2, no. 3, 033140. https://doi.org/10.1103/PhysRevResearch.2.033140

TY - JOUR

T1 - In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors

AU - Wu, S. F.

AU - Zhang, W. L.

AU - Thorsmølle, V. K.

AU - Chen, G. F.

AU - Tan, G. T.

AU - Dai, P. C.

AU - Shi, Y. G.

AU - Jin, C. Q.

AU - Shibauchi, T.

AU - Kasahara, S.

AU - Matsuda, Y.

AU - Sefat, A. S.

AU - Ding, H.

AU - Richard, P.

AU - Blumberg, G.

PY - 2020/7

Y1 - 2020/7

N2 - 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 Neél temperature in iron pnictides to in-plane electronic anisotropy induced by the collinear spin-density wave order.

AB - 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 Neél temperature in iron pnictides to in-plane electronic anisotropy induced by the collinear spin-density wave order.

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In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors

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