A coexistent phase of spin polarization and color superconductivity inhigh-density QCD is studied at zero temperature. The axial-vector self-energystemming from the Fock exchange term of the one-gluon-exchange interaction hasa central role to cause spin polarization. As a significant feature, the Fermisurface is deformed by the axial-vector self-energy and then rotation symmetryis spontaneously broken down. The gap function results in being anisotropic inthe momentum space in accordance with the deformation. It is found that spinpolarization barely conflicts with color superconductivity, and almost coexistswith it.
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