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

University of Tokyo researchers demonstrated a Mn3Sn antiferromagnetic spintronic device that switches state with a 40-picosecond electrical pulse.

The proof-of-concept produced very little waste heat and points to much faster, lower-power computing than today’s AI chips.

The device is not yet a manufacturable processor and would need new fabrication methods before practical use.

If scaled, the approach could reduce cooling and power demands for AI hardware and data centers.