Long-Time-Scale Magnetization Ordering Induced by an Adsorbed Chiral Monolayer on Ferromagnets

When an electron passes through a chiral molecule there is high probability for correlation between the momentum and spin of charge, thus leading to polarized current. This phenomenon known as induced selectivity (CISS) effect. One most surprising experimental results recently demonstrated that magnetization reversal in ferromagnet (FM) with perpendicular anisotropy can be realized solely by chemisorbing molecular monolayer without applying any current or external magnetic field. result raises currently open question whether this effect due bonding event, held ferromagnet, long timescale stabilized exchange interactions. In work we have performed vectorial field measurements reorientation ferromagnetic layer exhibiting CISS using nitrogen-vacancy centers diamond, followed time dynamics parallel, measured tilt angle order find dependence re-orientation change monolayer. We identified changes direction correspond angle, providing evidence long-timescale characteristic reorientation. suggests has over long-timescales which attribute These offer significant insights into fundamental processes underlying effect, contributing implementation state-of-the-art applications such spintronic memory devices.