Interplay between strain and the chain charge density wave in Sr14Cu24O41

POSTER

Abstract

Using resonant soft x-ray scattering (RSXS) and x-ray absorption (XAS), we have studied interplay between strain and chain charge density wave (CDW) in Sr14Cu24O41 (SCO). We have found a direct evidence of holes modulation in the chain. The hole modulation is pinned in the strain wave of the chain-ladder buckling and amplifies its modulation through the 4kF -CDW instability. Further, we use the coherent interference between the Thomson and resonant scattering to show that the holes are localized in the strain minima and the ratio of the the charge and strain amplitude, W, is estimated to be 278/A. This all explains both the insulating behavior of the chains and the apparent CDW in inelastic neutron scattering.

Authors

  • Andrivo Rusydi

    • University of Hamburg
    • University of Hamburg, D-20355, Germany

  • P. Abbamonte

  • H. Eisaki

  • Y. Fujimaki

  • N. Motoyama

  • S. Uchida

  • Y.-J. Kim

  • M. R\"ubhausen

  • G.A. Sawatzky