Publication date: 22nd July 2026
Chirality is omnipresent in nature, bridging magnetic and molecular spin phenomena. At the core of this connection lies the chiral-induced spin selectivity (CISS) effect, describing the highly efficient generation of spin polarized currents in chiral
molecules. Despite extensive experimental evidence, the underlying mechanisms of CISS remain debated. Here, we show how chirality is directly linked to the intrinsic magnetic moments in molecules, introducting unidirectionality. Furthermore, we explore the impact of chirality on spin angular momentum in hybrid metal/ chiral molecule thin film heterostructures [1]. For this, we inject a pure spin current via spin pumping and investigate the spin-to-charge conversion at the hybrid chiral interface. Notably, we observe a chiral-induced unidirectionality in the conversion. Furthermore, angle-dependent measurements reveal that the spin selectivity is maximum when the spin angular momentum is aligned with the molecular chiral axis. Finally, we demonstrate how molecular design and organization can be harnessed to control spin phenomena at hybrid chiral molecule magnetic interfaces. Our findings pave a pathway towards functional ”chiralitronic” devices - turning a fundamental puzzle into a technological opportunity.
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