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

TL;DR

This paper investigates how the curvature of a material affects spin polarization in a three-terminal system with Rashba spin-orbit interaction, showing that curvature induces finite polarization in ring-like geometries but not in linear ones.

Contribution

It demonstrates the significant impact of curvature on spin polarization in three-terminal systems with Rashba interaction, highlighting geometric configuration as a key factor.

Findings

Zero spin polarization in linear geometry

Finite spin polarization in ring-like geometry

Curvature enhances spin polarization effects

Abstract

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.