2024/06/04 by Igor Lyalin, Lyalin, Igor, Roland Kawakami +2 · 2 citations
Engineering · Physics and Astronomy · #Advanced Memory and Neural Computing #Infrared Target Detection Methodologies #Optical and Acousto-Optic Technologies #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.2406.01924
published as Phys. Rev. B 110, 104418 (2024)
arxiv created 2024/06/04 · arxiv updated 2026/07/31
The transport of spin currents across interfaces is relatively well studied, while the transport properties of orbital currents are just starting to be examined. In Cr/Ni bilayers, the spin-orbit torque (SOT) due to the orbital current generated in the Cr layer is believed to dominate over torques of other origins. In this work, we study SOT in Cr/X/Ni trilayers, where X is an ultra-thin spacer of a different material. Using the SOT as a proxy for the orbital current transferred from the Cr to the Ni layer, we compare Cr/X/Ni results to Pt/X/Ni, the system in which spin current generated in the Pt layer plays a dominant role. We find that across 12 different spacers the apparent interface transparency to the orbital current is comparable or larger than to the spin current.