Patent ID: 7602636

Claim:
A spin MOSFET comprising: a semiconductor substrate; a first magnetic film formed on the semiconductor substrate and including a first ferromagnetic layer, a magnetization direction of the first ferromagnetic layer being invariable; a second magnetic film formed on the semiconductor substrate to separate from the first magnetic film and including a magnetization free layer, a first nonmagnetic layer being a tunnel insulator and provided on the magnetization free layer, and a magnetization fixed layer provided on the first nonmagnetic layer, a magnetization direction of the magnetization free layer being variable and a magnetization direction of the magnetization fixed layer being invariable; a gate insulating film provided at least on the semiconductor substrate between the first magnetic film and the second magnetic film; and a gate electrode formed on the gate insulating film, the semiconductor substrate between the first and second magnetic films being a current path for each of a reading current and a writing current.