Raman Scattering as a Probe of Charge Nematic Fluctuations in Iron Based Superconductors
- Yang, Y.-X.
- Gallais, Y.
- Fernandes, R. M.
- Paul, I
- Chauvìère, L
- Méasson, M.-A.
- Cazayous, M
- Sacuto, A.
- Colson, D.
- Forget, A.
DOIAbstract
International audienceWe report Raman scattering measurement of charge nematic fluctuations in the tetragonal phase of BaFe 2 As 2 and Sr(Fe 1−x Co x) 2 As 2 (x=0.04) single crystals. In both systems, the observed nematic fluctuations are found to exhibit divergent Curie-Weiss like behavior with very similar characteristic temperature scales, indicating a universal tendency towards charge nematic order in 122 iron-based superconductors
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