Field-suppressed interfacial spin scattering in YBa2Cu3O7−δ/La0.67Sr0.33MnO3 heterostructures

► Distinct transport properties are displayed in the epitaxial YBCO/LSMO bilayers. ► Diffusion of the spin-polarized quasiparticles plays an important role. ► The field-suppressed interfacial spin scattering leads to the abnormal magnetotransport behaviors. ► The results disclose a new perspective for understanding the magnetotransport phenomena in S/F hybrids.