Science Daily May 3, 2024
The chiral induced spin selectivity (CISS) effect is emerging as a design principle for creating next-generation spintronic devices. CISS implies that the spin preference of chiral structures persists upon injection of pure spin currents and can act as a spin analyzer without the need for a ferromagnet. A team of researchers (North Carolina State University, University of Pittsburgh, University of Illinois – Urbana) showed that an anomalous spin current absorption in chiral metal oxides that manifested a colossal anisotropic nonlocal Gilbert damping with a maximum-to-minimum ratio of up to 1000%. A twofold symmetry of the damping was shown to result from differential spin transmission and backscattering that arose from chirality-induced spin splitting along the chiral axis. These studies revealed the rich interplay of chirality and spin dynamics and identified how chiral materials could be implemented to direct the transport of spin current… read more. Open Access TECHNICAL ARTICLE
Spin current transport revealed by TR-MOKE. Credit: SCIENCE ADVANCES, 3 May 2024, Vol 10, Issue 18