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We demonstrate the stability of a spin-triplet paired s-wave (with anadmixture of extended s-wave) state for the case of purely repulsiveinteractions in a degenerate two-band Hubbard model. We further show that nearhalf-filling the considered kind of superconductivity can coexist withantiferromagnetism. The calculations have been carried out with the use of theso-called statistically consistent Gutzwiller approximation for the case of asquare lattice. The absence of a stable paired state when analyzed in theHartree-Fock-BCS approximation allows us to claim that the electroncorrelations in conjunction with the Hund's rule exchange play the crucial rolein stabilizing the spin-triplet superconducting state. A sizable hybridizationof the bands suppresses the paired state.

Even-parity spin-triplet pairing for orbitally degenerate correlated electrons by purely repulsive interactions