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Reduced low frequency noise in electron beam evaporated MgO magnetic tunnel junctions
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View: Figures


Image of FIG. 1.
FIG. 1.

MR curves for an EB-MTJ and a rf-MTJ. Inset is a sketch of the multilayer stack investigated in this work, where thicknesses are in nanometers; .

Image of FIG. 2.
FIG. 2.

The normalized power spectral density of the noise as a function of frequency for the EB- and rf-MTJ for the parallel and antiparallel states. The thermal noise and amplifier noise have been subtracted. Inset shows the evolution of the Hooge parameter of the rf-MTJs and EB-MTJs in their parallel state as a function of annealing temperature.

Image of FIG. 3.
FIG. 3.

The RA dependence of the Hooge paremeter (a) and TMR (b) for two types of MTJs. The arrow on the left indicates the minimum noise level reported in Ref. 18. Lines are guides to the eye.

Image of FIG. 4.
FIG. 4.

The bias dependence of the Hooge parameter for two types of MTJs at parallel and antiparallel states. Lines are guides to the eye.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reduced low frequency noise in electron beam evaporated MgO magnetic tunnel junctions