Science Daily February 7, 2022
Researchers at Brown University have shown that the local dynamics of skyrmions, in contrast to the global dynamics of a skyrmion, can be introduced to provide effective functionalities for versatile computing. A single skyrmion interacting with local pinning centres under thermal effects can fluctuate in time and switch between a small-skyrmion and a large-skyrmion state, thereby serving as a robust true random number generator for probabilistic computing. Moreover, neighbouring skyrmions exhibit an anti-correlated coupling in their fluctuation dynamics. Both the switching probability and the dynamic coupling strength can be tuned by modifying the applied magnetic field and spin current. According to the researchers their results could lead to progress in developing magnetic skyrmionic devices with high tunability and efficient controls…read more. Open Access TECHNICAL ARTICLE
Local dynamics of a magnetic skyrmion. Credit: Nature Communications volume 13, Article number: 722 (2022)Â