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  Charge Density Waves in YBa2Cu3 O6.67 Probed by Resonant X-Ray Scattering under Uniaxial Compression

Kim, H.-H., Lefrançois, E., Kummer, K., Fumagalli, R., Brookes, N. B., Betto, D., et al. (2021). Charge Density Waves in YBa2Cu3 O6.67 Probed by Resonant X-Ray Scattering under Uniaxial Compression. Physical Review Letters, 126(3): 037002, pp. 1-7. doi:10.1103/PhysRevLett.126.037002.

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 Creators:
Kim, H.-H.1, Author
Lefrançois, E.1, Author
Kummer, K.1, Author
Fumagalli, R.1, Author
Brookes, N. B.1, Author
Betto, D.1, Author
Nakata, S.1, Author
Tortora, M.1, Author
Porras, J.1, Author
Loew, T.1, Author
Barber, M. E.2, Author              
Braicovich, L.1, Author
Mackenzie, A. P.3, Author              
Hicks, C. W.4, Author              
Keimer, B.1, Author
Minola, M.1, Author
Le Tacon, M.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              
4Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863466              

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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 Cu-O-Cu 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. © 2021 American Physical Society.

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Language(s): eng - English
 Dates: 2021-01-212021-01-21
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevLett.126.037002
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 126 (3) Sequence Number: 037002 Start / End Page: 1 - 7 Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1