Raman scattering study of ${\mathrm{NaFe}}_{0.53}{\mathrm{Cu}}_{0.47}\mathrm{As}$

Raman scattering study of ${NaFe}_{0.53} {Cu}_{0.47} As$

W.-L. Zhang, Y. Song, W.-Y. Wang, C.-D. Cao, P.-C. Dai, C.-Q. Jin, and G. Blumberg

Phys. Rev. B 98, 094512 – Published 13 September 2018

Abstract

We use polarization-resolved Raman scattering to study lattice dynamics in ${NaFe}_{0.53} {Cu}_{0.47} As$ single crystals. We identify four $A_{1 g}$ phonon modes, at 126, 172, 183, and 197 ${cm}^{- 1}$ , and four $B_{3 g}$ phonon modes at 101, 139, 173, and 226 ${cm}^{- 1}$ ( $D_{4 h}$ point group). The phonon spectra are consistent with the $I b a m$ space group, which confirms that the Cu and Fe atoms form a stripe order. The temperature dependence of the phonon spectra suggests weak electron-phonon and magnetoelastic interactions.

Received 23 April 2018
Revised 25 August 2018

DOI:https://doi.org/10.1103/PhysRevB.98.094512

Physics Subject Headings (PhySH)

Lattice dynamics Multiband superconductivity Optical phonons Stripes

Raman spectroscopy

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

W.-L. Zhang^1,*, Y. Song², W.-Y. Wang², C.-D. Cao^2,†, P.-C. Dai², C.-Q. Jin^3,4, and G. Blumberg^1,5,‡

¹Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
²Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University, Houston, Texas 77005, USA
³Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
⁴Collaborative Innovation Center of Quantum Matter, Beijing, China
⁵National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia

^*wz131@physics.rutgers.edu
^†Present address: Department of Applied Physics, Northwestern Polytechnical University, Xi’an 710072, China.
^‡girsh@physics.rutgers.edu

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Vol. 98, Iss. 9 — 1 September 2018

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Physical Review B

covering condensed matter and materials physics

Raman scattering study of ${NaFe}_{0.53} {Cu}_{0.47} As$

W.-L. Zhang, Y. Song, W.-Y. Wang, C.-D. Cao, P.-C. Dai, C.-Q. Jin, and G. Blumberg

Phys. Rev. B 98, 094512 – Published 13 September 2018

Abstract

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Physical Review B

covering condensed matter and materials physics

Raman scattering study of NaFe0.53Cu0.47As

W.-L. Zhang, Y. Song, W.-Y. Wang, C.-D. Cao, P.-C. Dai, C.-Q. Jin, and G. Blumberg

Phys. Rev. B 98, 094512 – Published 13 September 2018

Abstract

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Raman scattering study of ${NaFe}_{0.53} {Cu}_{0.47} As$