Switching Properties for MgO-Based Magnetic Tunnel Junction Devices Driven by Spin-Transfer Torque in the Nanosecond Regime
2011
Spin-transfer torque (STT) enables magnetization switching by passing a spin-polarized current through nanostructures such as spin-valves or magnetic tunnel junctions (MTJs). The required switching current depends on the pulse width which is related to the feature of switching modes. In this work the STT-induced switching processes for several nano-sized MTJs were studied with pulse widths ranging from 100 ms to 2 ns. We found that the intrinsic critical switching current depends on the junction area; and the crossover region of pulse width between two typical switching modes, i.e., thermal-activation and precession-amplification, is around 20 ns.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
19
References
3
Citations
NaN
KQI