Copper-related information from the oxygen 1s resonant x-ray emission in low-dimensional cuprates

Kozo Okada, Akio Kotani

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Incident- and outgoing-photon polarization dependences of O 1s x-ray emission spectrum (XES) in low-dimensional cuprate systems are investigated through model calculations using finite-size cluster models which include several copper sites. It is shown that the O 1s resonant XES provides information on the Cu-related excitations such as the Cu dd excitations and the charge-transfer (CT) excitations, in addition to the oxygen proper excitations. In particular, the lowest-energy CT between the neighboring CuO4 plaquettes accompanies Zhang-Rice singlet formation. Even the Cu 3d spin flip can be observed as an inelastic scattering peak. Thus the O 1s resonant XES can be a nice tool to investigate metal-ion-related excitations in oxides.

Original languageEnglish
Article number144530
Pages (from-to)1445301-1445307
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number14
Publication statusPublished - Apr 1 2002

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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