Phonon anomalies with doping in superconducting oxychlorides Ca2-xCuO2Cl2

Blair W. Lebert, Hajime Yamamoto, Masaki Azuma +6

We measure the dispersion of the Cu-O bond-stretching phonon mode in the high-temperature superconducting parent compound Ca${}_2$CuO${}_2$Cl${}_2$. Our density functional theory calcula…