Dispersion of magnetic excitations in the cuprate La2CuO4 and CaCuO2 compounds measured using resonant X-ray scattering

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Contributors

  • L. Braicovich - , Polytechnic University of Milan (Author)
  • L. J.P. Ament - , Leiden University (Author)
  • V. Bisogni - , European Synchrotron Radiation Facility (Author)
  • F. Forte - , Leiden University, University of Salerno (Author)
  • C. Aruta - , Universita' di Napoli Federico II (Author)
  • G. Balestrino - , University of Rome Tor Vergata (Author)
  • N. B. Brookes - , European Synchrotron Radiation Facility (Author)
  • G. M. De Luca - , Universita' di Napoli Federico II (Author)
  • P. G. Medaglia - , University of Rome Tor Vergata (Author)
  • F. Miletto Granozio - , Universita' di Napoli Federico II (Author)
  • M. Radovic - , Universita' di Napoli Federico II (Author)
  • M. Salluzzo - , Universita' di Napoli Federico II (Author)
  • J. Van Den Brink - , Leiden University, Radboud University Nijmegen (Author)
  • G. Ghiringhelli - , Polytechnic University of Milan (Author)

Abstract

By resonant inelastic x-ray scattering in the soft x-ray regime we probe the dynamical multiple-spin correlations in the antiferromagnetic cuprates La2CuO4 and CaCuO2. High resolution measurements at the copper L3 edge allow the clear observation of dispersing bimagnon excitations. Theory based on the ultrashort core-hole lifetime expansion fits the data on these coherent spin excitations without free parameters.

Details

Original languageEnglish
Article number167401
JournalPhysical review letters
Volume102
Issue number16
Publication statusPublished - 21 Apr 2009
Peer-reviewedYes
Externally publishedYes

Keywords

ASJC Scopus subject areas