The CuO-planes of high-T_c superconductors were found to consist of geometric stripes with alternating superconducting and antiferromagnetic areas. Here we will investigate the repulsive Hubbard model of striped clusters as a possible microscopic description of the superconducting elements. The focus of our attention lies on the superconducting properties. We report in agreement with the square Hubbard model a signal in the d-wave channel and investigate its dependence on system size, cluster shape and interaction strength.
D-wave superconductivity in high-Tc cuprates is believed to be strongly intertwined with stripe order. In this work, using the constrained-path quantum Monte Carlo method, we study the superconducting behavior of a dimer-embedded extended Hubbard model with on-site repulsion U and nearest-neighbor attractive interaction V. Our results show that when the hopping between the dimer and its surroundings is small and U is less than
2.0,V induces a significant enhancement of d-wave superconductivity, mainly contributed by partially filled stripes consisting of one-dimensionally arranged dimers. This work provides a new platform for a deeper understanding of the interplay between d-wave superconductivity and stripe order in high-Tc cuprates.