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Spin switch based on double spin-filter tunnel junction geometry
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View: Figures


Image of FIG. 1.
FIG. 1.

Illustration of the proposed spin switch mechanism based on double SF geometry. The energy profile of the tunnel barriers are illustrated for the spin-P and spin-AP configurations, and the two spin channels are sketched separately, with the outer channel (closer to reader) depicting spin-up, and the inner channel spin-down, respectively. The two SF layers are identical, with thickness , average tunnel barrier height , and exchange splitting .

Image of FIG. 2.
FIG. 2.

Calculated spin polarization of the transient current across a symmetric double SF tunnel junction in its spin-P and -AP configurations. The parameters used are: , , . Inset shows the barrier energy profile in the P configuration. The barrier profiles for the two spin channels in the AP configuration are illustrated in the bottom panel for a few characteristic bias strengths. Here positive polarity means electrons are traveling from left to right, and we define spin-up as the direction parallel to the magnetic direction of the left SF layer.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin switch based on double spin-filter tunnel junction geometry