Theory of Spin Fluctuation-Induced Superconductivity Based on a d- p Model. II. –Superconducting State–

  title={Theory of Spin Fluctuation-Induced Superconductivity Based on a d- p Model. II. –Superconducting State–},
  author={Tetsuya Takimoto and Toru Moriya Japan Science and Technology Corporation and Domestic Research Fellow and Science University of Tokyo},
  journal={Journal of the Physical Society of Japan},
The superconducting state of a two-dimensional d - p model is studied from the spin fluctuation point of view by using a strong coupling theory. The fluctuation exchange (FLEX) approximatoin is employed to calculate the spin fluctuations and the superconducting gap functions self-consistently in the optimal- and over-doped regions of hole concentration. The gap function has a symmetry of d x 2 - y 2 type and develops below the transition temperature T c more rapidly than in the BCS model. Its… 
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