A molecule's 'handedness' can physically reshape magnetic swirls in a computer chip.
April 17, 2026
Original Paper
Magnetic Microscopy of Skyrmions in Magnetic Thin Films with Chiral Overlayers
arXiv · 2604.13931
The Takeaway
Skyrmions are tiny magnetic vortices that could store data much more efficiently than current tech. This study found that if you coat a magnetic film with chiral molecules (molecules that are mirror images of each other), the skyrmions actually change shape and size based on that handedness. It is the first time we've seen chemistry directly dictate the shape of magnetism like this. This chemical control over magnets means we could build chips that are shaped and tuned at the molecular level. It bridges the gap between organic chemistry and high-tech computer hardware.
From the abstract
Topologically nontrivial magnetic textures such as skyrmions offer promising opportunities for spintronic applications. In recent years, it has been shown that the magnetic properties of layered materials can be affected by depositing chiral molecules on the surface, while the influence of chiral overlayers on skyrmion properties such as their stability and interactions remains largely unexplored. To address this challenge, we employ wide-field nitrogen-vacancy (NV) magnetometry to directly imag