GIANT MAGNETIC TUNNELING EFFECT IN 81NIFE AL2O3/FE JUNCTION/

A new effect, spin-polarized magnetovoltage (MV) effect, is observed i n an 81NiFe/Al2O3/Fe junctions with cross-strip-electrode configuratio n. When one ferromagnetic electrode carries current, a voltage can be found between the ends of the other ferromagnetic electrode, and it va ries with the magnetization process of the two ferromagnetic electrode s. The MV ratio, which is much larger than the magnetoresistance ratio for the same junction, has reached 53% at room temperature.