  Orbital currents and accumulation provide a new avenue to boost spintronic
effects in nanodevices. Here we use interconversion effects between charge
current and orbital angular momentum to demonstrate a dramatic increase in the
magnon spin injection and detection efficiencies in nanodevices consisting of a
magnetic insulator contacted by Pt/CuOx electrodes. Moreover, we note distinct
variations in efficiency for magnon spin injection and detection, indicating a
disparity in the direct and inverse orbital Rashba Edelstein effect
efficiencies.
