Charge ordering in La1.8-x Eu0.2 Srx CuO4 studied by resonant soft x-ray diffraction

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Jörg Fink - , Helmholtz Centre Berlin for Materials and Energy, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Enrico Schierle - , Helmholtz Centre Berlin for Materials and Energy (Author)
  • Eugen Weschke - , Helmholtz Centre Berlin for Materials and Energy (Author)
  • Jochen Geck - , Leibniz Institute for Solid State and Materials Research Dresden, University of British Columbia (Author)
  • David Hawthorn - , University of British Columbia (Author)
  • Viktor Soltwisch - , Helmholtz Centre Berlin for Materials and Energy (Author)
  • Hiroki Wadati - , University of British Columbia (Author)
  • Hsueh Hung Wu - , University of Cologne, National Synchrotron Radiation Research Center Taiwan (Author)
  • Hermann A. Dürr - , Helmholtz Centre Berlin for Materials and Energy (Author)
  • Nadja Wizent - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Bernd Büchner - , Chair of Experimental Solid State Physics, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • George A. Sawatzky - , University of British Columbia (Author)

Abstract

Resonant soft x-ray scattering with photon energies near the OK and the Cu L3 edges was used to study the charge ordering in the system La 1.8-x Eu0.2 Srx CuO4 as a function of temperature for x=0.125 and 0.15. From the superstructure diffraction intensities, a charge ordering with a doping-dependent wave vector is derived which is in this system well below the transition temperature of the low-temperature tetragonal phase but well above the onset of spin ordering. This indicates that structural changes and magnetic interactions are not in general the driving force for the formation of stripelike phases in two-dimensional- doped cuprates. Analysis of the lineshape of the scattered intensity as a function of photon energy yields evidence for a high hole concentration in the stripes.

Details

Original languageEnglish
Article number100502
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number10
Publication statusPublished - 3 Mar 2009
Peer-reviewedYes

External IDs

ORCID /0000-0002-2438-0672/work/158767807