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Understanding the switching-off mechanism in migration based resistively switching model systems
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10.1063/1.2793686
/content/aip/journal/apl/91/13/10.1063/1.2793686
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/13/10.1063/1.2793686
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Hysteretic curves of a cell with a gap of . A full voltage sweeping cycle follows this sequence: , and the cycle numbers are given in the figure. The voltage sweeping step was set to be . The inset is the sketch of a coplanar cell.

Image of FIG. 2.
FIG. 2.

SEM image of a cell after resistive switching (on state). The dotted line indicates the original size of the Ag electrode.

Image of FIG. 3.
FIG. 3.

The switching-on process while applying to a cell with a gap of : (a) curve, [(b), (c), and (d)] SEM images showing the Ag dendrite growth after applying for about 1, 2, and , respectively.

Image of FIG. 4.
FIG. 4.

(Color) Field simulation results of the front-most Ag dendrite and the Ag electrode during switching-off: (a) Sketch of the Ag dendrite and the solid Ag electrode. (b) Tip of the Ag dendrite in higher magnification, representing the situation in the late on state. The blue lines represent equal potential lines after applying a switching-off voltage of . The voltage difference between two adjacent lines is . The black cones represent the electrical field and point to the direction of the ion migration. (c) The situation slightly later, representing the early off-state. The Ag dendrite retreats due to the dissolution of Ag. As soon as the electrical contact is disconnected, the field distribution changes, which accelerates the further dissolution of the dendrite tip.

Image of FIG. 5.
FIG. 5.

Hysteretic curves of an cell with a gap of . The voltage sweeping step was set to be . The cycle numbers are given in the figure.

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/content/aip/journal/apl/91/13/10.1063/1.2793686
2007-09-28
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Understanding the switching-off mechanism in Ag+ migration based resistively switching model systems
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/13/10.1063/1.2793686
10.1063/1.2793686
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