Elementary Remarks on High Temperature Superconductors

  • H. Fröhlich

Abstract

These materials are based on metal-oxides, including perovskites and certain atoms with incomplete inner shells, e.g., rare earths. It should be noted that more than 90% of all ferroelectrics are oxides, based on 0--. In these cases the 0-- electrons are displaced arising from mode softening. In our case the mode is not softened, but a polar oscillation ω of the 0-- electrons should exist. Its frequency would be expected to be higher than that of an ionic vibration.

Keywords

Perovskite 

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • H. Fröhlich
    • 1
  1. 1.Department of Physics, Oliver Lodge LaboratoryThe University of LiverpoolLiverpoolEngland

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