Gap function symmetry and spin dynamics in electron-doped cuprate superconductor

Details Gap function symmetry and spin dynamics in electron-doped cuprate superconductor Gap function symmetry and spin dynamics in electron-doped cuprate superconductor

2007-07-30

arxiv.org/abs/0707.4348v1

Phys. Rev. B 76, 014513 (2007)

Physics

Condensed Matter

Superconductivity

5 RevTeX4 pages, 2 EPS figures

Scientific paper

10.1103/PhysRevB.76.014513

An antiferromagnetic (AF) spin fluctuation induced pairing model is proposed for the electron-doped cuprate superconductors. It suggests that, similar to the hole-doped side, the superconducting gap function is monotonic d_{x^2-y^2}-wave and explains why the observed gap function has a nonmonotonic d_{x^2-y^2}-wave behavior when an AF order is taken into account. Dynamical spin susceptibility is calculated and shown to be in good agreement with the experiment. This gives a strong support to the proposed model.

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