Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor

Understand

Charge density waves are a common occurrence in all families of high critical temperature superconducting cuprates.

• Although consistently observed in the underdoped region of the phase diagram and at relatively low temperatures, it is still unclear to what extent they influence the unusual properties of these systems.
• Using resonant x-ray scattering we carefully determined the temperature dependence of charge density modulations in (Y,Nd)Ba$_2$Cu$_3$O$_{7-{\delta}}$ for three doping levels.
• We discovered short-range dynamical charge density fluctuations besides the previously known quasi-critical charge density waves.