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      https://www.ias.ac.in/article/fulltext/pram/031/01/0047-0050

    • Keywords

       

      High temperature superconductivity; annealing; quenching; substitution effect; YBa2Cu3O7-δ; X-ray absorption spectra

    • Abstract

       

      K-absorption edge region of copper in oxygen and air-annealed highTc(∼91 K) superconducting (SC) samples, YBa2Cu3O7-δ, has been investigated. The spectra exhibit a weak structure at ∼23 eV. To understand its origin, the spectra have been recorded for quenched Ce-substituted and semiconducting Y2BaCuO5 samples. It is argued that the weak structure (∼23 eV) is not a characteristic feature of an SC compound but appears to be a final state effect.

    • Author Affiliations

       

      P K Mehta1 S R Reddy2 O M Prakash3 B D Padalia1

      1. Department of Physics, Indian Institute of Technology, Bombay - 400 076, India
      2. Regional Sophisticated Instrumentation Centre, Indian Institute of Technology, Bombay - 400 076, India
      3. Materials Science Centre, Indian Institute of Technology, Bombay - 400 076, India
    • Dates

       
  • Pramana – Journal of Physics | News

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