The technique uses an ultra high frequency AC current to flip the magnetic poles of electrons in a cobalt-copper-cobalt sandwich.
Or, as the researchers themselves put it: "Current-induced switching in the orientation of magnetic moments is observed in cobalt-copper-cobalt structures, for currents flowing perpendicularly through the layers. Magnetic domains in adjacent cobalt layers can be manipulated controllably between stable parallel and antiparallel configurations by applying current pulses of the appropriate sign."
The upshot, say the researchers, is a way of storing data twice as quickly as has been achievable to date and three times faster than currently available hard drives.
Van een commerciŽle toepassing is de techniek vooralsnog niet geschikt...