Raman scattering study of the lattice dynamics of superconducting LiFeAs

Y. J. Um; J. T. Park; B. H. Min; Y. J. Song; Y. S. Kwon; B. Keimer; M. Le Tacon

doi:10.1103/PhysRevB.85.012501

Raman scattering study of the lattice dynamics of superconducting LiFeAs

Y. J. Um, J. T. Park, B. H. Min, Y. J. Song, Y. S. Kwon, B. Keimer, M. Le Tacon

Department of Physics and Chemistry

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18 Scopus citations

Abstract

We report an investigation of the lattice dynamical properties of LiFeAs using inelastic light scattering. Five of the six expected phonon modes are observed. The temperature evolution of their frequencies and linewidths is in good agreement with an anharmonic-decay model. We find no evidence for substantial electron-phonon coupling, and no superconductivity-induced phonon anomalies.

Original language	English
Article number	012501
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.85.012501
State	Published - 12 Jan 2012

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10.1103/PhysRevB.85.012501

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abstract = "We report an investigation of the lattice dynamical properties of LiFeAs using inelastic light scattering. Five of the six expected phonon modes are observed. The temperature evolution of their frequencies and linewidths is in good agreement with an anharmonic-decay model. We find no evidence for substantial electron-phonon coupling, and no superconductivity-induced phonon anomalies.",

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AU - Park, J. T.

AU - Min, B. H.

AU - Song, Y. J.

AU - Kwon, Y. S.

AU - Keimer, B.

AU - Le Tacon, M.

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AB - We report an investigation of the lattice dynamical properties of LiFeAs using inelastic light scattering. Five of the six expected phonon modes are observed. The temperature evolution of their frequencies and linewidths is in good agreement with an anharmonic-decay model. We find no evidence for substantial electron-phonon coupling, and no superconductivity-induced phonon anomalies.

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JO - Physical Review B - Condensed Matter and Materials Physics

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Raman scattering study of the lattice dynamics of superconducting LiFeAs

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