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Reversible bistability of conductance on graphene/CuOx/Cu nanojunction
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10.1063/1.3694754
/content/aip/journal/apl/100/12/10.1063/1.3694754
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/12/10.1063/1.3694754
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Scheme of the measurement and memristive system that is composed of graphene/Cu with interfacial CuOx. (b) I-V characteristics of the graphene/Cu memristive system that exhibits bipolar switching behavior under the dc voltage sweep. (c) The frequency of switching bias from LRS to HRS and from HRS to LRS.

Image of FIG. 2.
FIG. 2.

(Color online) (a) XPS spectra of C 1s, Cu 2p, and O 1s binding states on the graphene/Cu substrate (HRS) at a 50° take-off angle. (b) The depth profile of bond fractions in the graphene/Cu surface region obtained from O 1s spectra for the sample in the HR state. (c) The depth profile of the O-Cu fraction in the graphene/Cu surface region obtained from O 1s spectra for the samples in the initial, HR, and LR states.

Image of FIG. 3.
FIG. 3.

(Color online) Schematic illustration of the switching mechanism of the graphene/Cu memristive system. The redistribution of ionic oxygen at the graphene/Cu interface driven by migration is equivalent to the modulation between the conductive channel formation (redistribution of ionic oxygen) and disruption (the higher resistive oxygen rich CuOx formation).

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/content/aip/journal/apl/100/12/10.1063/1.3694754
2012-03-19
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reversible bistability of conductance on graphene/CuOx/Cu nanojunction
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/12/10.1063/1.3694754
10.1063/1.3694754
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