Curvature effect on spin polarization in a three-terminal geometry in presence of Rashba spin–orbit interaction

•The robust effect of curvature on spin polarization is reported.•The bridging material is subjected to Rashba spin–orbit coupling.•The results are valid for any multi-terminal bridge setup.

The robust effect of curvature on spin polarization is reported in a three-terminal bridge system where the bridging material is subjected to Rashba spin–orbit interaction. The results are examined considering two different geometric configurations, ring- and linear-like, of the material which is coupled to one input and two output leads. Our results exhibit absolute zero spin polarization for the linear sample, while finite polarization is obtained in output leads for the ring-like sample.