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Raman scattering as a probe of charge nematic fluctuations in iron based superconductors

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 نشر من قبل Yann Gallais
 تاريخ النشر 2013
  مجال البحث فيزياء
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We 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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