Lattice and electronic anomalies of CaFe_2As_2 studied by Raman spectroscopy

K. -Y. Choi, D. Wulferding, P. Lemmens +3

We report inelastic light scattering experiments on CaFe_2As_2 in the temperature range of 4 to 290 K. In in-plane polarizations two Raman-active phonon modes are observed at 189 a…