Anisotropic electron coupling as a phenomenological model for high-Tc superconductors.

  title={Anisotropic electron coupling as a phenomenological model for high-Tc superconductors.},
  author={Langfeld and Frey},
  journal={Physical review. B, Condensed matter},
  volume={48 6},
  • Langfeld, Frey
  • Published 13 May 1993
  • Physics, Medicine
  • Physical review. B, Condensed matter
A three-dimensional weak coupling BCS model with an anisotropic pairing interaction in momentum space is reported. It exhibits an anisotropic gap in accord with recent experimental observations for high-${\mathit{T}}_{\mathit{c}}$ oxides. The gap ratio 2\ensuremath{\Delta}/${\mathit{k}}_{\mathit{B}}$${\mathit{T}}_{\mathit{c}}$ is calculated as a function of the anisotropy ratio of the electron pairing. It is found that the mean gap ratio decreases with increasing anisotropy of the electron… 
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