Doping-dependent phonon anomaly and charge-order phenomena in the HgBa${}_2$CuO${}_{4+\delta }$ and HgBa${}_2$CaCu${}_2$O${}_{6+\delta }$

Lichen Wang, Biqiong Yu, Ran Jing +14

Using resonant X-ray diffraction and Raman spectroscopy, we study charge correlations and lattice dynamics in two model cuprates, HgBa${}_2$CuO${}_{4+\delta }$ and HgBa${}_2$CaCu${}_2$O$_{…