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Numerical study of momentum-dependent gap function is presented to make clearthe origin of superconductivity in copper oxides. We claim that antinodalregion with pronounced nesting feature of the Fermi contour gives rise tosuperconducting pairing with large momentum under screened Coulomb repulsion.Such a pairing results in both spatial checkerboard pattern of thesuperconducting state below Tc and a gapped state of incoherent pairs in abroad temperature range above Tc. We explain the momentum dependence of thecoherent spectral weight detected in angle-resolved photoemission spectroscopyand predict antinodal Bogoliubov quasiparticle interference other than observedin the nodal region.

Checkerboard superconducting order and antinodal Bogoliubov quasiparticle interference