Reduction in switching current density for current-induced magnetization switching without loss of thermal stability: Effect of perpendicular anisotropy
Reduction in switching current density for current-induced magnetization switching without loss of thermal stability: Effect of perpendicular anisotropy
- 주제(키워드) Spin-transfer torque , Current-induced magnetization switching Perpendicular anisotropy
- 발행기관 한국물리학회
- 발행년도 2009
- 총서유형 Journal
- UCI G704-001115.2009.9.5.039
- KCI ID ART001376345
- 본문언어 영어
초록/요약
Solving the Landau–Lifshitz–Gilbert–Slonczewski equation numerically, we show that switching current density for the current-induced magnetization switching decreases by introducing the perpendicular anisotropy smaller than the out-of-plane demagnetization energy in the switched layer as predicted by theories. Interestingly, the introduction of the perpendicular anisotropy does not decrease the thermal stability of magnetization, but rather slightly increases. The reduction in switching current density results from the decrease of demagnetization effect whereas the increase of thermal stability results from the decrease of attempt frequency.
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