An inelastic x-ray study of phonon broadening and charge density wave formation in ortho-II ordered YBa2Cu3O6.54

Research output: Contribution to journalArticlepeer-review


  • Johan Chang
  • Ayman Said
  • Bogdan Leu
  • Ruixing Liang
  • Doug A. Bonn
  • W. N. Hardy
  • Stephen M. Hayden

Colleges, School and Institutes

External organisations

  • EPFL
  • Department of Physics and Astronomy, University of British Columbia, Vancouver, BC Canada ; Institute for Astronomy (IFA), University of Vienna, 1180 Vienna, Austria
  • University of Bristol


Inelastic x-ray scattering is used to investigate charge density wave (CDW) formation and the low-energy lattice dynamics of the underdoped high temperature superconductor ortho-II YBa2Cu3O6.54. We find that, for a temperature ~ 1/3 of the CDW onset temperature (~ 155 K), the CDW order is static within the resolution of the experiment, that is the inverse lifetime is
less than 0.3 meV. In the same temperature region, low-energy phonons near the ordering wavevector of the CDW show large increases in their linewidths. This contrasts with the usual behavior in CDW systems where the phonon anomalies are strongest near the CDW onset temperature.


Original languageEnglish
JournalPhysical Review B
Issue number054506
Early online date8 Jul 2013
Publication statusPublished - 19 Aug 2013
Event Computation meets Experiment: KKR Greens functions for calculations of spectroscopic, transport and magnetic properties - Warwick, United Kingdom
Duration: 13 Jul 201315 Jul 2013