Charge Density Waves in YBa2Cu3O6.67 Probed by Resonant X-Ray Scattering under Uniaxial Compression

H.-H. Kim, E. Lefrançois, K. Kummer, R. Fumagalli, N. B. Brookes, D. Betto, S. Nakata, M. Tortora, J. Porras, T. Loew, M. E. Barber, L. Braicovich, A. P. Mackenzie, C. W. Hicks, B. Keimer, M. Minola, and M. Le Tacon
Phys. Rev. Lett. 126, 037002 – Published 21 January 2021
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Abstract

We report a comprehensive Cu L3-edge resonant x-ray scattering (RXS) study of two- and three-dimensional (2D and 3D) incommensurate charge correlations in single crystals of the underdoped high-temperature superconductor YBa2Cu3O6.67 under uniaxial compression up to 1% along the two inequivalent CuOCu bond directions (a and b) in the CuO2 planes. We confirm the strong in-plane anisotropy of the 2D charge correlations and observe their symmetric response to pressure: pressure along a enhances correlations along b, and vice versa. Our results imply that the underlying order parameter is uniaxial. In contrast, 3D long-range charge order is only observed along b in response to compression along a. Spectroscopic RXS measurements show that the 3D charge order resides exclusively in the CuO2 planes and may thus be generic to the cuprates. We discuss implications of these results for models of electronic nematicity and for the interplay between charge order and superconductivity.

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  • Received 19 August 2020
  • Revised 10 November 2020
  • Accepted 14 December 2020

DOI:https://doi.org/10.1103/PhysRevLett.126.037002

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

H.-H. Kim1, E. Lefrançois1, K. Kummer2, R. Fumagalli3, N. B. Brookes2, D. Betto1,2, S. Nakata1, M. Tortora1, J. Porras1, T. Loew1, M. E. Barber4, L. Braicovich2,3, A. P. Mackenzie4,5, C. W. Hicks4, B. Keimer1, M. Minola1,*, and M. Le Tacon6,†

  • 1Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569 Stuttgart, Germany
  • 2ESRF, The European Synchrotron, 71 Avenue des Martyrs, F-38043 Grenoble, France
  • 3Dipartimento di Fisica, Politecnico di Milano, I-20133 Milano, Italy
  • 4Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, D-01187 Dresden, Germany
  • 5Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom
  • 6Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology, D-76344 Eggenstein-Leopoldshafen, Germany

  • *m.minola@fkf.mpg.de
  • matthieu.letacon@kit.edu

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Issue

Vol. 126, Iss. 3 — 22 January 2021

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