The current-induced dynamics of a vortex core in a ferromagnetic disk was investigated by using a three-terminal device with the magnetic tunnel junction (MTJ). The gyroscopic motion of a core was detected as the periodic oscillation of the output signal from the MTJ. It was found that the amplitude of the output signal is determined by the core polarity, which can be used for electrical reading of the bit information of the vortex core memory cell.
ASJC Scopus subject areas
- Physics and Astronomy(all)