Manifestations of twin boundaries in martensites and in superconductors

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A variety of physical properties of martensites in general and of Y1Ba2Cu3Ox in particular are correlated with statics and dynamics of twin-boundaries. The quasi two-dimensional oscillations of twin boundaries ("dyadons") yield a T2 term in the low temperature specific heat. Electron-dyadon coupling contributes to the linear temperature dependence of the normal state resistivity. This coupling may enhance Tc if the superconductivity mechanism is a strong coupling and a strongly retarded one. Twin boundaries can form Josephson junctions and account for nonlinear current-voltage relation and extreme sensitivity to magnetic fields close to Tc.

Original languageEnglish
Pages (from-to)575-584
Number of pages10
JournalSynthetic Metals
Issue number2-3
StatePublished - 21 Mar 1989

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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