Observation of multiple Zhang-Rice excitations in a correlated solid

Resonant inelastic X-ray scattering study of Li2CuO2

T. Learmonth*, C. McGuinness, P. A. Glans, J. E. Downes, T. Schmitt, L. C. Duda, J. H. Guo, F. C. Chou, K. E. Smith

*Corresponding author for this work

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Abstract

Multiple Zhang-Rice type spectral features have been observed in resonant inelastic X-ray scattering (RIXS) from the quasi-one-dimensional cuprate charge transfer insulator Li2CuO2. The first feature appears at constant emission energy, and is associated with a Zhang-Rice singlet final state. The second is an interplaquette charge transfer excitation that results in a novel triplet Zhang-Rice-type final state. It is accompanied by the presence of a O 2p nonbonding to upper Hubbard band excitation at an energy close to that of a calculated triplet charge transfer Zhang-Rice-type excitation. The site selectivity and polarization rules associated with RIXS allows these two excitations to be distinguished.

Original languageEnglish
Article number47012
Pages (from-to)47012-p1-47012-p5
Number of pages5
JournalEPL
Volume79
Issue number4
DOIs
Publication statusPublished - 1 Aug 2007

Bibliographical note

Copyright 2007 EDP Sciences. Reprinted from Europhysics letters. The original publication is available at http://epljournal.edpsciences.org/.

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    Learmonth, T., McGuinness, C., Glans, P. A., Downes, J. E., Schmitt, T., Duda, L. C., ... Smith, K. E. (2007). Observation of multiple Zhang-Rice excitations in a correlated solid: Resonant inelastic X-ray scattering study of Li2CuO2. EPL, 79(4), 47012-p1-47012-p5. [47012]. https://doi.org/10.1209/0295-5075/79/47012