%ALee, Sangjun%AHuang, Edwin%AJohnson, Thomas%AGuo, Xuefei%AHusain, Ali%AMitrano, Matteo%ALu, Kannan%AZakrzewski, Alexander%Ade la Peña, Gilberto%APeng, Yingying%AHuang, Hai%ALee, Sang-Jun%AJang, Hoyoung%ALee, Jun-Sik%AJoe, Young%ADoriese, William%ASzypryt, Paul%ASwetz, Daniel%AChi, Songxue%AAczel, Adam%AMacDougall, Gregory%AKivelson, Steven%AFradkin, Eduardo%AAbbamonte, Peter%BJournal Name: Proceedings of the National Academy of Sciences; Journal Volume: 119; Journal Issue: 15 %D2022%I %JJournal Name: Proceedings of the National Academy of Sciences; Journal Volume: 119; Journal Issue: 15 %K %MOSTI ID: 10320768 %PMedium: X %TGeneric character of charge and spin density waves in superconducting cuprates %XCharge density waves (CDWs) have been observed in nearly all families of copper-oxide superconductors. But the behavior of these phases across different families has been perplexing. In La-based cuprates, the CDW wavevector is an increasing function of doping, exhibiting the so-called Yamada behavior, while in Y- and Bi-based materials the behavior is the opposite. Here, we report a combined resonant soft X-ray scattering (RSXS) and neutron scattering study of charge and spin density waves in isotopically enriched La 1.8 − x Eu 0.2 Sr x CuO 4 over a range of doping 0.07 ≤ x ≤ 0.20 . We find that the CDW amplitude is temperature independent and develops well above experimentally accessible temperatures. Further, the CDW wavevector shows a nonmonotonic temperature dependence, exhibiting Yamada behavior at low temperature with a sudden change occurring near the spin ordering temperature. We describe these observations using a Landau–Ginzburg theory for an incommensurate CDW in a metallic system with a finite charge compressibility and spin-CDW coupling. Extrapolating to high temperature, where the CDW amplitude is small and spin order is absent, our analysis predicts a decreasing wavevector with doping, similar to Y and Bi cuprates. Our study suggests that CDW order in all families of cuprates forms by a common mechanism. %0Journal Article