X-ray diffraction observation of charge density wave order at zero magnetic field in ortho-II YBa${}_2$Cu${}_3$O${}_{6.54}$

Abstract

X-ray diffraction measurements show that the high-temperature superconductor YBa${}_2$Cu${}_3$O${}_{6.54}$, with ortho-II oxygen order, has charge density wave order (CDW) in the absence of an applied magnetic field. The dominant wavevector of the CDW is ${\mathbf{q}}_{\mathrm{CDW}}=(0,0.328(2),0.5)$, with the in-plane component parallel to the $\mathbf{b}$-axis (chain direction). It has a similar incommensurability to that observed in ortho-VIII and ortho-III samples, which have different dopings and oxygen orderings. Our results for ortho-II contrast with recent high-field NMR measurements, which suggest a commensurate wavevector along the $\mathbf{a}$-axis. We discuss the relationship between spin and charge correlations in YBa${}_2$Cu${}_3$O${}_y$, and recent high-field quantum oscillation, NMR and ultrasound experiments.

Accepted for publication in Physical Review Letters. More data along the a-axis direction is included in this version 2

References in corpus (8)

• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor
• Electronic liquid crystal state in the high-temperature superconductor YBCO(6.45)
• Electron pockets in the Fermi surface of hole-doped high-Tc superconductors
• Polar Kerr Effect Measurements of YBa2Cu3O6+x: Evidence for Broken Symmetry Near the Pseudogap Temperature
• Distinct Charge Orders in the Planes and Chains of Ortho-III-Ordered YBa${}_2$Cu${}_3$O${}_{6+\delta }$ Superconductors Identified by Resonant Elastic X-ray Scattering
• Lifshitz critical point in the cuprate superconductor YBa2Cu3Oy from high-field Hall effect measurements
• Fermi surface pockets in ortho-II YBa${}_2$Cu${}_3$O${}_{6.5}$: the origin of quantum oscillations?

Cited by in corpus (6)

• Classification of Charge Density Waves Based on Their Nature
• Energy gaps in high-transition temperature cuprate superconductors
• Resonant X-ray Scattering Study of Charge Density Wave Correlations in YBa${}_2$Cu${}_3$O${}_{6+x}$
• Broken translational and rotational symmetry via charge stripe order in underdoped YBCO
• Intermediate Coupling Model of the Cuprates
• Vortices and charge order in high-T_c superconductors