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    • Keywords


      Inelastic neutron scattering; phonon density of states; high temperature super-conductors; Tl2CaBa2Cu2O8; YBa2Cu3O7; lattice dynamics

    • Abstract


      Coherent inelastic neutron scattering measurements have been carried out on the high temperature superconductors Tl2CaBa2Cu2O8 (Tl-2122,Tc=107 K) and YBa2Cu3O7 (Y-123,Tc=92 K), at the Dhruva reactor at Trombay. The density of phonon states in Tl-2122 is enhanced at 6–17 meV and reduced at 40–70meV compared to that in Y-123.

    • Author Affiliations


      S L Chaplot1 B A Dasannacharya1 R Mukhopadhyay1 K R Rao1 P R Vijayaraghavan1 R M Iyer1 2 G M Phatak1 2 J V Yakhmi1 2

      1. Solid State Physics Division, Bhabha Atomic Research Centre, Bombay - 400 085, India
      2. Chemistry Division, Bhabha Atomic Research Centre, Bombay - 400 085, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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