2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/26088We investigate the spin-flip effects on the Andreev bound states and the supercurrent in a superconductor/quantum-dot/superconductor system theoretically. The spin-flip scattering in the quantum dot can reverse the supercurrent flowing through the system, and one $π$-junction transition occurs. By controlling the energy level of quantum dot, the supercurrent is reversed back and another $π$-junction transition appears. The different influences of the spin-flip scattering and the intradot energy level on the supercurrent are interpreted in the picture of Andreev bound states.9 pages, 3 figuresMesoscale and Nanoscale Physicstext