Charge density waves in cuprate superconductors beyond the critical doping

Abstract The unconventional normal-state properties of the cuprates are often discussed in terms emergent electronic order that onsets below a putative critical doping x c ? 0.19. Charge density wave (CDW) correlations represent one such order; however, experimental evidence for generally spans limited range falls short value , leading to questions regarding its essential relevance. Here, we use X-ray diffraction demonstrate CDW La 2? Sr CuO 4 persist up at least = 0.21. show strong changes through superconducting transition, but no obvious discontinuity 0.19, despite Fermi surface topology and transport this doping. These results interaction between CDWs superconductivity even overdoped prompt reconsideration role high-temperature cuprate phase diagram.