• Calculated oxygen 1s core-level photoemission spectra from cuprate superconductors

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      https://www.ias.ac.in/article/fulltext/pram/037/02/0135-0140

    • Keywords

       

      X-ray photoemission spectra; oxygen 1s; cuprate superconductors; core-level calculation

    • Abstract

       

      The observed O 1s X-ray photoemission spectra of the cuprate superconductors often exhibit a satellite at a higher binding energy to the main peak. The origin of this satellite is not fully understood. We have done model cluster calculations to investigate the origin of this satellite using the configuration interaction approach. The calculated spectra for the divalent and superconducting cuprates essentially exhibit a single peak. On distorting the cluster in-plane, the peak shifts to higher binding energies. This substantiates a deterioration of the surface leading to the observed satellite structure in the O 1s core-level photoemission spectra of the cuprate superconductors.

    • Author Affiliations

       

      A Chainani1 D D Sarma1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
  • Pramana – Journal of Physics | News

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