We report on an optically probed ferromagnetic resonance experiment which elucidates the magnon-exciton coupling at interface between a magnetic thin film and atomically semiconductor. Our approach allies long-lived magnons hosted in of yttrium iron garnet (YIG) to strongly bound excitons flake transition metal dichalcogenide, ${\mathrm{MoSe}}_{2}$. The induce dynamical valley Zeeman effect rul...

For applications making use of magnonic spin currents damping effects, which decrease the conductivity, have to be minimized. We here investigate magnon transport in an yttrium iron garnet thin film with strongly reduced effective magnetization. show that a three-terminal device conductivity can increased by factor up six current applied modulator electrode, generates compensation above thresho...