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Local lattice instability and ionic transport in high-temperature superconductors.

Author(s) : RAKITIN A., KOBAYASHI M., LITVINCHUK A. P.

Type of article: Article

Summary

Ionic transport, a characteristic feature of superionic conductors, is analyzed microscopically for the RBCO (R= rare earth) high-temperature superconductors. The electronic correlation effects are considered to be responsible for the formation of a local double-well potential for apical oxygen, which in its turn results in decrease of the activation energy for interstitial chain oxygen defects. The behaviour of the double well upon reduction of the oxygen content is discussed and its possible manifestation in the low-frequency dynamical response is considered.

Details

  • Original title: Local lattice instability and ionic transport in high-temperature superconductors.
  • Record ID : 1998-2679
  • Languages: English
  • Source: J. Supercond. - n. 4
  • Publication date: 1997/08
  • Document available for consultation in the library of the IIR headquarters only.

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