Interfacial spin transport effects in single-crystalline epitaxial Fe/Rh bilayers

The generation of pure spin currents via spin pumping in magnetic bilayers is one of the key effects for efficient spin-to-charge conversion. This project focuses on a combination of epitaxial Fe films as spin source and Rh films as spin sink. Our FMR studies show a spin pumping efficiency in Fe/Rh comparable to the one of Fe/Pt which opens a great potential for spin-to-charge conversion application including THz emission. Combining XMCD, ferromagnetic resonance and magnetometry, we will study the magnetic proximity effect on the interfacial spin transport and spin dynamics. Using XMCD, we will investigate the changes of orbital and spin magnetic moments due to interface polarization and alloying of Rh films grown on single crystalline Fe as a function of film thickness and growth conditions. This information will be correlated with electrical and spin transport properties of Fe/Rh bilayers (spin pumping), g-factor, magnetic anisotropy, damping and THz emission measurements.