Oxygen superstructures throughout the phase diagram of $(\mathbf{Y},\mathbf{Ca})\mathbf{B}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6+\mathbf{x}}$

Abstract

Short-range lattice superstructures have been studied with high-energy x-ray diffuse scattering in underdoped, optimally doped, and overdoped $(\mathrm{Y},\mathrm{Ca})\mathrm{B}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$. A new four-unit-cell superstructure was observed in compounds with $x\sim 0.95$. Its temperature, doping, and material dependence was used to attribute its origin to short-range oxygen vacancy ordering, rather than electronic instabilities in the $\mathrm{Cu}{\mathrm{O}}_2$ layers. No significant diffuse scattering is observed in YBa${}_2$Cu${}_4$O${}_8$. The oxygen superstructures must be taken into account when interpreting spectral anomalies in $(\mathrm{Y},\mathrm{Ca})\mathrm{B}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$.

References in corpus (5)

• How to detect fluctuating order in the high-temperature superconductors
• Oxygen Phonon Branches in YBa2Cu3O7
• Anomalous oxygen isotope effect on the in-plane FIR conductivity of detwinned YBa2Cu3${}^{16,18}$O${}_{6.9}$
• Proximity Effects and Quantum Dissipation in the Chains of YBa${}_2$Cu${}_3$O$_{6+x}
• X-Ray-Diffraction Study of Charge-Density-Waves and Oxygen-Ordering in YBa2Cu3O6+x Superconductor

Cited by in corpus (17)

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• Giant phonon anomalies and central peak due to charge density wave formation in YBa${}_2$Cu${}_3$O${}_{6.6}$
• Absence of $3a_0$ Charge Density Wave Order in the Infinite Layer Nickelates
• Detection of the Unusual Magnetic Orders in the Pseudogap Region of a High-Temperature Superconducting YBa2Cu3O6.6 Crystal by Muon-Spin Relaxation
• Resonant elastic soft x-ray scattering in oxygen-ordered YBa_2Cu_3O_{6+delta}
• Scanning micro X-ray diffraction unveils the distribution of oxygen chains nano-puddles in YBa2Cu3O6.33
• Highly anisotropic anomaly in the dispersion of the copper-oxygen bond-bending phonon in superconducting YBa2Cu3O7 from inelastic neutron scattering
• Lattice dynamical signature of charge density wave formation in underdoped YBa2Cu3O6+x
• Two and Three Dimensional Incommensurate Modulation in Optimally-Doped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Mechanism of High-Tc Superconductivity Based Mainly on Tunneling Measurements in Cuprates
• Structural matters in HTSC; the origin and form of stripe organization and checker boarding
• Observation of a Three-Dimensional Quasi-Long-Range Electronic Supermodulation in YBa2Cu3O7-x/La0.7Ca0.3MnO3 Heterostructures
• Diffuse Scattering from Correlated Electron Systems
• Magnetic properties of lightly doped antiferromagnetic YBa${}_2$Cu${}_3$O${}_y$
• In-plane Isotropy of the Low Energy Phonon Anomalies in YBa${}_2$Cu${}_3$O${}_{6+x}$
• Non-equilibrium Anisotropic Phases, Nucleation and Critical Behavior in a Driven Lennard-Jones Fluid