Development of Chiral van der Waals Superlattices and Investigation of Spin Properties

The emergence of the chiral-induced spin-selectivity effect offers a new avenue for chiral organic molecules to autonomously manipulate spin configurations, thereby opening up possibilities in spintronics and spin-dependent electrochemical applications. In this study, a promising chiral van der Waals superlattice is synthesized via electrochemical intercalation of chiral molecules into a van der Waals layered material. Multiple tunneling processes within the highly ordered chiral layered structure of chiral TiS2 superlattices result in an exceptionally high spin polarization exceeding 90％. The combination of metallic conductivity and high spin polarization sets the stage for the development of a new generation of CISS materials, enabling a wide range of electron spin-based applications.