ar X iv : c on d - m at / 9 40 30 13 v 1 3 M ar 1 99 4 Nesting Mechanism for d - symmetry Superconductors ∗
نویسندگان
چکیده
A nested Fermi surface with nearly parallel orbit segments is found to yield a singlet d–wave superconducting state at high temperatures for a restricted range of the on–site Coulomb repulsion that avoids the competing spin density wave instability. The computed superconducting transition temperature drops dramatically as the nesting vector is decreased, in accord with recent photo–emission data on the Bi2212 and Bi2201 cuprates.
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تاریخ انتشار 1994