Charge density waves in cuprate superconductors beyond the critical doping

Abstract

The unconventional normal-state properties of the cuprates are often discussed in terms of emergent electronic order that onsets below a putative critical doping of xc = 0.19. Charge-density wave (CDW) correlations represent one such order; however, experimental evidence for such order generally spans a limited range of doping that falls short of the critical value xc, leading to questions regarding its essential relevance. Here, we use x-ray diffraction to demonstrate that CDW correlations in La2-xSrxCuO4 persist up to a doping of at least x = 0.21. The correlations show strong changes through the superconducting transition, but no obvious discontinuity through xc = 0.19, despite changes in Fermi surface topology and electronic transport at this doping. These results demonstrate the interaction between CDWs and superconductivity even in overdoped cuprates and prompt a reconsideration of the role of CDW correlations in the high-temperature cuprate phase diagram.

8 pages + 5 pages of supplemental material; accepted in npj Quantum Materials

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• Topological Doping and Superconductivity in Cuprates: An Experimental Perspective
• Nanoscale inhomogeneity of charge density waves dynamics in La${}_{2-x}$Sr${}_x$NiO${}_4$
• Formation of spin and charge ordering in the extended Hubbard model during a finite-time quantum quench
• Two-particle bound states on a lattice
• Interplay between atomic fluctuations and charge density waves in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Quantum fluctuations of charge order induce phonon softening in a superconducting cuprate
• Fluctuating charge-density-wave correlations in the three-band Hubbard model
• Robust Charge-Density Wave Correlations in Optimally-Doped YBa2Cu3Oy
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• Generalization of interlayer tunneling models to cuprate superconductors with charge density waves
• Reaching Quantum Critical Point by Adding Non-magnetic Disorder in Single Crystals of Superconductor $({\text{Ca}}_x{\text{Sr}}_{1-x}{)}_3{\text{Rh}}_4{\text{Sn}}_{13}$
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• Electronic and magnetic ground state of 4$d^3$ double perovskite ruthenates A${}_2$LaRuO${}_6$ (A $=$ Ca, Sr, Ba)
• Real-space d-wave superconductivity from weak attraction
• Superconductivity Reinforces Charge-Density-Wave Phase Coherence across Cuprates