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  Uniaxial pressure control of competing orders in a high-temperature superconductor

Kim, H.-H., Souliou, S. M., Barber, M. E., Lefrançois, E., Minola, M., Tortora, M., et al. (2018). Uniaxial pressure control of competing orders in a high-temperature superconductor. Science, 362(6418), 1040-1044. doi:10.1126/science.aat4708.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-A59E-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-B233-B
Genre: Journal Article

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Kim, H.-H.1, Author
Souliou, S. M.1, Author
Barber, M. E.2, Author              
Lefrançois, E.1, Author
Minola, M.1, Author
Tortora, M.1, Author
Heid, R.1, Author
Nandi, N.2, Author              
Borzi, R. A.1, Author
Garbarino, G.1, Author
Bosak, A.1, Author
Porras, J.1, Author
Loew, T.1, Author
König, M.3, Author              
Moll, P. M.4, Author              
Mackenzie, A. P.5, Author              
Keimer, B.1, Author
Hicks, C. W.6, 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              
3Markus König, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863470              
4Physics of Microstructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466701              
5Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              
6Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863466              

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 Abstract: Cuprate superconductors are known to harbor charge order in part of their phase diagram. Curiously, the order has a two-dimensional (2D) character at zero magnetic field, whereas a 3D order appears at high fields. Kim et al. now show that in a yttrium-based cuprate, a 3D charge order can be induced even at zero magnetic field. The authors compressed the material along one direction and measured a large inelastic x-ray scattering signal that was consistent with the formation of a 3D order. The measurements suggest that the induced order is associated with an optical lattice mode in the material.Science, this issue p. 1040Cuprates exhibit antiferromagnetic, charge density wave (CDW), and high-temperature superconducting ground states that can be tuned by means of doping and external magnetic fields. However, disorder generated by these tuning methods complicates the interpretation of such experiments. Here, we report a high-resolution inelastic x-ray scattering study of the high-temperature superconductor YBa2Cu3O6.67 under uniaxial stress, and we show that a three-dimensional long-range-ordered CDW state can be induced through pressure along the a axis, in the absence of magnetic fields. A pronounced softening of an optical phonon mode is associated with the CDW transition. The amplitude of the CDW is suppressed below the superconducting transition temperature, indicating competition with superconductivity. The results provide insights into the normal-state properties of cuprates and illustrate the potential of uniaxial-pressure control of competing orders in quantum materials.

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Language(s): eng - English
 Dates: 2018-11-302018-11-30
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1126/science.aat4708
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Title: Science
  Other : Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 362 (6418) Sequence Number: - Start / End Page: 1040 - 1044 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1