Frequency converter based on nanoscale MgO magnetic tunnel junctions

Details Frequency converter based on nanoscale MgO magnetic tunnel junctions Frequency converter based on nanoscale MgO magnetic tunnel junctions

2009-07-23

arxiv.org/abs/0907.3992v1

Physics

Condensed Matter

Materials Science

9 pages, 2 figures

Scientific paper

We observe both dc voltage rectification and frequency conversion that occur when a reference microwave current is injected to a MgO based magnetic tunnel junction (MTJ). The rectification that is spin-transfer torque dependent is observed when the frequency of the input microwave current coincides with the resonance frequency of the magnetization of the active layer. In addition, we demonstrate that frequency conversion is the result of amplitude modulation between the reference signal and the resistance of the MTJ that is fluctuating at the resonance frequency of the magnetization of the active layer.

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