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Imprint of charge and oxygen orders on Dy ions in DyBa2Cu3 O6+x thin films probed by resonant x-ray scattering

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Amorese,  Andrea
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Betto, D., Bluschke, M., Putzky, D., Schierle, E., Amorese, A., Fürsich, K., et al. (2020). Imprint of charge and oxygen orders on Dy ions in DyBa2Cu3 O6+x thin films probed by resonant x-ray scattering. Physical Review B, 102: 195149, pp. 1-9. doi:10.1103/PhysRevB.102.195149.


Cite as: https://hdl.handle.net/21.11116/0000-0007-9D1E-8
Abstract
We used resonant x-ray scattering at the CuL3 and DyM5 edges to investigate charge order in thin films of underdoped DyBa2Cu3O6+x (DyBCO) epitaxially grown on NdGaO3(110) substrates. The films show an orthorhombic crystal structure with short-range ortho-II oxygen order in the charge-reservoir layers. At the Dy M5 edge we observe diffraction peaks with the same planar wave vectors as those of the two-dimensional charge density wave in the CuO2 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 nonmonotonic 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. © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.