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

Research output: Contribution to journalArticlepeer-review

Authors

  • H.-H. Kim
  • S. M. Souliou
  • M. E. Barber
  • E. Lefrançois
  • M. Minola
  • M. Tortora
  • R. Heid
  • N. Nandi
  • R. A. Borzi
  • G. Garbarino
  • A. Bosak
  • J. Porras
  • T. Loew
  • M. König
  • P. J. W. Moll
  • B. Keimer
  • M. Le Tacon

Colleges, School and Institutes

Abstract

Cuprates 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.

Details

Original languageEnglish
Pages (from-to)1040-1044
Number of pages5
JournalScience
Volume362
Issue number6418
Publication statusPublished - 30 Nov 2018