DATA STORAGE METHOD AND DEVICE USING SPIN-POLARIZED ELECTRONS Russian patent published in 2000 - IPC

FIELD: data storage and retrieval. SUBSTANCE: device has substrate, data storage layer on substrate, and source of spin-polarized electrons. Data storage layer has definite number of magnetic-material atomic layers possessing magnetic anisotropy. Data are stored in layer by feeding spin-polarized electrons whose magnetic field polarization is aimed at one of two data values; electron characteristic is that of non-coupled electrons in data storage layer which sets up magnetic moment of material. Data are read out of data storage layer by aiming spin-polarized electron of second wavelength at data magnetic field and determining deviation or by attracting spin-polarized electron with aid of data magnetic field. As an alternative, magnetic medium builds up secondary electron whose characteristics are used for data reading. EFFECT: improved storage capacity and data access speed. 17 cl, 13 dwg