Higher anisotropic d-wave symmetry in cuprate superconductors

Details Higher anisotropic d-wave symmetry in cuprate superconductors Higher anisotropic d-wave symmetry in cuprate superconductors

1999-07-16

arxiv.org/abs/cond-mat/9907231v1

Physics

Condensed Matter

Superconductivity

Latex 5 pages, 3 figures attached, Journal Ref. : Journal of Physics C, Vol. 11, issue 30, L371-L377 (1999)

Scientific paper

10.1088/0953-8984/11/30/103

We derive a pair potential from tight binding further neighbours attraction that leads to superconducting gap symmetry similar to that of the phenomenological spin fluctuation theory of high temperature superconductors (Monthoux, Balatsky, Pines, Phys. Rev. Lett. {\bf 67}, 3448). We show that higher anisotropic d-wave than the simpliest d-wave symmetry is one of the important ingredients responsible for higher BCS characteristic ratio.

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