Abstract
We performed a micromagnetic investigation of current-induced magnetization switching in perpendicular magnetic tunnel junctions with polarization- enhancement layers. The pinned layer with a polarization-enhancement layer can be excited and eventually reverses at a current density lower than the value theoretically expected from that without a polarization-enhancement layer. The reversal results in continuous flip-flops of magnetizations as long as the current is applied. The flip-flop occurs at only one current polarity, caused by the precession amplification in polarization-enhancement layer. In order to prevent the unwanted flip-flop, the perpendicular anisotropy of the pinned layer must be severalfold larger than that of the free layer.
Original language | English |
---|---|
Article number | 232506 |
Journal | Applied Physics Letters |
Volume | 93 |
Issue number | 23 |
DOIs | |
Publication status | Published - 2008 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)