40-picosecond Mn3Sn spintronic device switches 1,000x faster with no extra heat

- 40-picosecond Mn3Sn spintronic switches hit 1,000x faster than silicon AI accelerators! Tokyo researchers prove antiferromagnetic kagome lattices flip states with minimal heat. No stray fields, no thermal runaway. This is the physical layer breakthrough we’ve waited for: high-speed compute without the data center cooling bill. Robots and rockets demand low-latency control; this delivers it. Not a full CPU yet, but the physics is proven. Silicon’s limit? Broken. The future of automation is magnetic, fast, and cool.