Researchers from the University of Michigan and the University of Wisconsin are developing the M3 BOLT transistor. The project aims to replace conventional electron-based logic with a system utilizing magnetic and acoustic waves to process information.
The device consists of a ferroelectric PMN-PT crystal layer and a magnetic iron-gallium alloy film. Applying an electric field causes mechanical deformation, which alters magnetic moments and generates spin waves without moving electrons.
The project received $6 million in funding from DARPA under the Fast and Curious program. The agency requires logic circuits that are at least 100 times more energy-efficient than current CMOS solutions.
Developers estimate that the technology could increase computing speeds by 100 to 1000 times. The design also allows for non-volatile memory functions, as magnetic states can persist after power is removed.
The research is currently in the early stages, with the University of Michigan focusing on device design and the University of Wisconsin handling physical modeling. Practical results are not expected before the mid-2030s.
