Magnetoresistive element and memory element
    2.
    发明公开
    Magnetoresistive element and memory element 失效
    磁阻元件和存储器元件

    公开(公告)号:EP0759619A3

    公开(公告)日:1998-10-28

    申请号:EP96113285

    申请日:1996-08-20

    摘要: A magnetoresistive effect element having a large magnetoresistive change with a small magnetic field, and a memory element using the same. A semiconductor film 2 to provide a window for excitation light is arranged on a substrate 1 via a buffer layer. Another semiconductor film 3 and a nonmagnetic metallic film (or a nonmagnetic insulating film) 4 are arranged on the semiconductor film 2 successively. A magnetic film 5 having a square magnetization curve is arranged on the nonmagnetic metallic film (or a nonmagnetic insulating film) 4. An electrode 6 is arranged beneath the substrate 1 and another electrode 7 is arranged on the magnetic film 5. By radiating a laser light beam to the semiconductor film acting as a window 2, electrons having spin polarization are excited in the semiconductor film 3 so as to utilize the dependency of the scattering of electrons at the surface of the magnetic film 5 on the magnetization orientation of the magnetic film and the spin polarization state of the excited electrons.