Imprint of charge and oxygen orders on Dy ions in DyBa${}_2$Cu${}_3$O${}_{6+x}$ thin films probed by resonant x-ray scattering

Abstract

We used resonant elastic x-ray scattering at the Cu $L_3$ and Dy $M_5$ edges to investigate charge order in thin films of underdoped DyBa${}_2$Cu${}_3$O${}_{6+x}$ (DyBCO) epitaxially grown on NdGaO${}_3$ (110) substrates. The films show an orthorhombic crystal structure with short-range ortho-II oxygen order in the charge-reservoir layers. At the Dy $M_5$ edge we observe diffraction peaks with the same planar wavevectors as those of the two-dimensional charge density wave in the CuO${}_2$ planes and of the ortho-II oxygen order, indicating the formation of induced ordered states on the rare-earth sublattice. The intensity of the resonant diffraction peaks exhibits a non-monotonic dependence on an external magnetic field. Model calculations on the modulation of the crystalline electric field at the Dy sites by charge and oxygen order capture the salient features of the magnetic field, temperature, and photon energy dependence of the scattering intensity.

9 pages, 10 figures

References in corpus (8)

• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• 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
• Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3
• Charge ordering in superconducting copper oxides
• Resonant elastic soft x-ray scattering in oxygen-ordered YBa_2Cu_3O_{6+delta}
• Resonant Enhancement of Charge Density Wave Diffraction in the Rare-Earth Tritellurides
• Selective probing of magnetic order on Tb and Ir sites in stuffed Tb${}_{2+x}$Ir${}_{2-x}$O${}_{7-y}$ using resonant X-ray scattering

Cited by in corpus (2)

• Stabilization of three-dimensional charge order through interplanar orbital hybridization in Pr${}_x$Y${}_{1-x}$Ba${}_2$Cu${}_3$O${}_{6+\delta }$
• Search for $Q\sim 0$ order near a forbidden Bragg position in Bi${}_{2.1}$Sr${}_{1.9}$CaCu${}_2$O${}_{8+x}$ with resonant soft x-ray scattering