Bulk charge density wave and electron-phonon coupling in superconducting copper oxychlorides

Abstract

Bulk charge density waves are now reported in nearly all high-temperature superconducting cuprates, with the noticeable exception of one particular family: the copper oxychlorides. Here, we used resonant inelastic X-ray scattering to reveal a bulk charge density waves in these materials. Combining resonant inelastic X-ray scattering with non-resonant inelastic X-ray scattering, we investigate the interplay between the lattice excitations and the charge density wave, and evidence the phonon anomalies of the Cu-O bond-stretching mode at the charge density wave wave-vector. We propose that such electron-phonon anomalies occur in the presence of dispersive charge excitations emanating from the charge density wave and interacting with the Cu-O bond-stretching phonon. Our results pave the way for future studies, combining both bulk and surface probes, to investigate the static and dynamical properties of the charge density wave in the copper oxychloride family.

References in corpus (50)

• A Four-Unit-Cell Periodic Pattern of Quasiparticle States Surrounding Vortex Cores in Bi2Sr2CaCu2O8+d
• Magnetic-field-induced charge-stripe order in the high temperature superconductor YBa2Cu3Oy
• A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
• Ubiquitous Interplay between Charge Ordering and High-Temperature Superconductivity in Cuprates
• Charge order driven by Fermi-arc instability in Bi2201
• Resonant x-ray scattering studies of charge order in cuprates
• Classification of Charge Density Waves Based on Their Nature
• Charge density wave origin of cuprate checkerboard visualized by scanning tunneling microscopy
• Electron-phonon coupling reflecting dynamic charge inhomogeneity in copper-oxide superconductors
• Giant phonon anomalies and central peak due to charge density wave formation in YBa${}_2$Cu${}_3$O${}_{6.6}$
• Direct phase-sensitive identification of a d-form factor density wave in underdoped cuprates
• Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor
• Dispersive charge density wave excitations and temperature dependent commensuration in Bi2Sr2CaCu2O8+δ
• Re-entrant charge order in overdoped (Bi,Pb)${}_{2.12}$Sr${}_{1.88}$CuO${}_{6+\delta }$ outside the pseudogap regime
• Rotated stripe order and its competition with superconductivity in La${}_{1.88}$Sr${}_{0.12}$CuO${}_4$
• Commensurate $4a_0$ period Charge Density Modulations throughout the $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+x}$ Pseudogap Regime
• High-temperature charge density wave correlations in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$ without spin-charge locking
• Determining the Electron-Phonon Coupling Strength in Correlated Electron Systems from Resonant Inelastic X-ray Scattering
• Softening of Cu-O bond stretching phonon in tetragonal HgBa${}_2$CuO${}_{4+\delta }$
• Directly characterizing the relative strength and momentum dependence of electron-phonon coupling using resonant inelastic x-ray scattering
• Bond stretching phonon softening and angle-resolved photoemission kinks in optimally doped Bi2Sr1.6La0.4Cu2O6 superconductors
• Photoemission kinks and phonons in cuprates
• Charge ordering in superconducting copper oxides
• Spectroscopic Evidence for Charge Order Melting via Quantum Fluctuations in a Cuprate
• Experimental Determination of Momentum-Resolved Electron-Phonon Coupling
• Nature of the charge-density wave excitations in cuprates
• Formation of Incommensurate Charge Density Waves in Cuprates
• Multi-orbital charge density wave excitations and concomitant phonon anomalies in Bi${}_2$Sr${}_2$LaCuO${}_{6+\delta }$
• Incommensurate phonon anomaly and the nature of charge density waves in cuprates
• Anharmonic effects in MgB2? A comparative inelastic X-ray scattering and Raman study
• Evidence for a charge collective mode associated with superconductivity in copper oxides from neutron and x-ray scattering measurements of La${}_{2-x}$Sr${}_x$CuO${}_4$
• Enhanced electron-phonon coupling for charge-density-wave formation in La${}_{1.8-x}$Eu${}_{0.2}$Sr${}_x$CuO${}_{4+\delta }$
• Determining the Electron-Phonon Coupling in Superconducting Cuprates by Resonant Inelastic X-ray Scattering: Methods and Results on Nd${}_{1+x}$Ba${}_{2-x}$Cu${}_3$O${}_{7-\delta }$
• Locally commensurate charge-density wave with three-unit-cell periodicity in YBCO
• Charge dynamics of Ca_{2-x}Na_{x}CuO_{2}Cl_{2} as a correlated electron system with the ideal tetragonal lattice
• Giant electron-phonon anomaly in doped La2CuO4 and other cuprates
• Magnetic excitations and phonons simultaneously studied by resonant inelastic x-ray scattering in optimally doped Bi${}_{1.5}$Pb${}_{0.55}$Sr${}_{1.6}$La${}_{0.4}$CuO${}_{6+\delta }$
• Charge-Stripe Crystal Phase in an Insulating Cuprate
• Charge Order Lock-in by Electron-Phonon Coupling in La${}_{1.675}$Eu${}_{0.2}$Sr${}_{0.125}$CuO${}_4$
• Persistent low-energy phonon broadening near the charge order $q$-vector in bilayer cuprate Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Unusual dynamic charge-density-wave correlations in HgBa${}_2$CuO${}_{4+\delta }$
• Sharp optical phonon softening close to optimal doping in La${}_{2-x}$Ba${}_x$CuO${}_{4+\delta }$
• Surface pinning of fluctuating charge order: an "extraordinary" surface phase transition
• Magnetic Phase Diagram of the Hole-doped Ca${}_{2-x}$Na${}_x$CuO${}_2$Cl${}_2$ Cuprate Superconductor
• Absence of long-ranged charge order in $\mathrm{N}{\mathrm{a}}_{\mathrm{x}}\mathrm{C}{\mathrm{a}}_{2-\mathrm{x}}\mathrm{Cu}{\mathrm{O}}_2\mathrm{C}{\mathrm{l}}_2$ at x=0.08
• Density wave probes cuprate quantum phase transition
• Phonon anomalies and lattice dynamics in superconducting oxychlorides Ca${}_{2-x}$CuO${}_2$Cl
• High-pressure synthesis and superconductivity of Ca2-xNaxCuO2Cl2
• Collective mode in the SU(2) theory of cuprates
• Phonon anomalies with doping in superconducting oxychlorides Ca2-xCuO2Cl2

Cited by in corpus (2)

• Hybridization of lattice and charge order excitations in a superconducting cuprate
• The influence of phonon symmetry and electronic structure on the electron-phonon coupling momentum dependence in cuprates