Patent ID: 6201259
Filing Date: 2001-03-13
Classification: B82Y,H01L

Abstract:
A field-effect transistor, comprising:a substrate on which are formed a source region, a drain region, and a gate insulating layer;a gate electrode over said gate insulating layer, said gate electrode being a first magnetic film; anda tunneling magnetoresistance element, including a tunnel junction film disposed over said gate electrode, a second magnetic film formed over a first portion of said first magnetic film with said tunnel junction film therebetween, and a third magnetic film formed over a second portion of said first magnetic film with said tunnel junction therebetween;wherein a first tunneling magnetoresistance characteristic is exhibited when an electric current flows between said first magnetic film and said second magnetic film, and a second tunneling magnetoresistance characteristic having a different magnitude than said first tunneling magnetoresistance characteristic is exhibited when an electric current flows between said first magnetic film and said third magnetic film.