2019/11/06 by Braj Bhusan Singh, Koustuv Roy, Singh, Braj Bhusan +9
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Heusler alloys: electronic and magnetic properties #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Semiconductor materials and interfaces
paper · pdf · doi:10.48550/arxiv.1911.02230
openalex publication_date 2019/11/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Ferromagnetic materials exhibiting low magnetic damping (α) and moderately high saturation magnetization are required from the viewpoints of generation, transmission and detection of spin wave. Since spin-to-charge conversion efficiency is another important parameter, high spin mixing conductance (gr\uparrow \downarrow) is the key for efficient spin-to-charge conversion. Full Heusler alloys e.g. Co2Fe0.4Mn0.6Si (CFMS), which are predicted to be 100% spin polarized, possess low α. However, the gr\uparrow \downarrow at the interface between CFMS and a paramagnet has not fully been understood. Here, we report the investigations of spin pumping and inverse spin Hall effect in CFMS/Pt bilayers. Damping analysis indicates the presence of significant spin pumping at the interface of CFMS and Pt, which is also confirmed by the detection of inverse spin Hall voltage. We show that in CFMS/Pt the gr\uparrow \downarrow (1.77×1020m-2) and interface transparency (84%) are higher compared to values reported for other ferromagnet/heavy metal systems.