We study theoretically spin pumping in bilayers consisting of superconductors and antiferromagnetic insulators. consider both compensated uncompensated interfaces include the regular scattering channel Umklapp channel. find that at temperatures close to critical precession frequencies much lower than gap, spin-current is enhanced as compared normal metals. Otherwise, suppressed. The relevant wh...

Abstract This work provides the first experimental determination of low-temperature thermal properties for novel highly pure single-crystalline ZnGa 2 O 4 . The temperature dependence conductivity, diffusivity and specific heat capacity as-grown, degenerated single crystals is measured using ω -method between T = 27 K room temperature. At D ≈ 6.9 · 10 −6 m s, conductivity λ 22.9 W mK −1 C V 537...

We argue that the unusually strong electron-electron interactions in narrow bands moir\'e superlattices originate from well-localized Wannier orbitals. Enhanced overlaps of electronic wavefunctions, enabled by such orbitals, result a el-el superlattice umklapp scattering. identify scattering processes as source temperature-dependent resistivity observed these systems. In simple model, predicts ...