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Lattice stability of YBa2Cu3O6and YBa2Cu3O7

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0921-4534(91)90966-3
Disciplines
  • Physics

Abstract

Abstract The lattice stability of YBa 2Cu 3O x is studied using a rigid ion model. The semiconducting compound, YBa 2Cu 3O 6, is stable, while superconducting YBa 2Cu 3O 7 is unstable. The vibrational eigenstates of the phonon modes which destabilize YBa 2Cu 3O 7 have properties which may greatly enhance the electron-phonon coupling.

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