Anisotropic Magnon Spin Transport in Ultra-thin Spinel Ferrite Thin Films -- Evidence for Anisotropy in Exchange Stiffness

Ruofan Li, Peng Li, Di Yi +5

We report measurements of magnon spin transport in a spinel ferrite, magnesium aluminum ferrite $\mathrm{MgA}{\mathrm{l}}_{0.5}\mathrm{F}{\mathrm{e}}_{1.5}{\mathrm{O}}_4$ (MAFO), which has a substantial in-plane four-fold…