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Adjustable spin torque in magnetic tunnel junctions with two fixed layers
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10.1063/1.1899764
/content/aip/journal/apl/86/15/10.1063/1.1899764
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/15/10.1063/1.1899764
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Electron energy diagram for antialigned fixed layers (a) and aligned fixed layers (b) for a net electron current flowing from left to right. Arrows on the electrons indicate the direction of the spin current due to each fixed layer. Inset (a) and (b): Diagrams of how the fixed-layer magnetic configuration affects the net dipole field of the free layer.

Image of FIG. 2.
FIG. 2.

(a) Sweep of for antialigned fixed layers measured without dc current bias and of ac sense current. (b) Sweep of for antialigned fixed layers measured at a constant . Squares (∎) are for increasing and circles (●) are for decreasing . Phase diagrams for aligned (c) and antialigned (d) fixed layers, constructed by sweeping at fixed and by sweeping at fixed for each magnetic configuration. States are represented by alignment between the bottom fixed layer and the free layer; either parallel (P) or antiparallel (AP). For sweeps, P to AP transitions are marked by filled squares (∎) while AP to P is marked with filled diamonds (◆). For sweeps, P to AP transitions are marked by open squares (◻), while AP to P is marked with open diamonds (◇). Lines represent fits to Eqs. (1) and (2). All measurements shown were made at . Inset: Calculated of the free layer as function of .

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/content/aip/journal/apl/86/15/10.1063/1.1899764
2005-04-06
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Adjustable spin torque in magnetic tunnel junctions with two fixed layers
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/15/10.1063/1.1899764
10.1063/1.1899764
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