Polaronic Effect and Its Impact on T c for Novel Layered Superconducting Systems
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Polaronic Effect and Its Impact on T c for Novel Layered Superconducting Systems

  • Author(s): Kresin, Vladimir
  • et al.
Abstract

The crystal lattice of a complex compound may contain a subsystem of ions with each one possessing two close equilibrium positions (double-well structure). For example, the oxygen ions in the cuprates form such a subsystem. In such a situation it is impossible to separate electronic and local vibrational motions. This leads to a large increase in the effective strength of the electron–lattice interaction, which is beneficial for pairing.

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