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Probing into the metal-graphene interface by electron transport measurements
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10.1063/1.4789554
/content/aip/journal/apl/102/3/10.1063/1.4789554
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/3/10.1063/1.4789554
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) SEM image of the graphene device with its corresponding design scheme drawn in the inset. (b) Histogram of the RT resistances of all graphene devices at a zero gate voltage. (c) Gate voltage dependence of the graphene device at a source-drain voltage of 1 mV. (d) I–V curves of the device at various temperatures.

Image of FIG. 2.
FIG. 2.

(a) ln( as a function of inverse temperature for the graphene G1–G7 devices. The solid lines present fittings to the thermionic emission theory. (b) Temperature dependent resistance of the G1 device. The solid curves in red, green, and blue are fittings to the thermionic emission, the 3D Mott's VRH, and the FITC models, respectively. (c) Temperature dependent resistance of the G1–G7 devices. The symbols and solid curves present experimental data and the best fits to the FITC model.

Image of FIG. 3.
FIG. 3.

Two parameters T 1 (a) and T 2 (b), extracted from curve fittings in Fig. 2(c) , are displayed with respect to their device RT resistance. (c) The ratio of T 1/T 0 and the calculated value of the effective barrier width w as a function of the device RT resistance. The dashed line in red is a guide to eyes. (d) The calculated value of the effective area A as a function of the device RT resistance. (e) Schemes of electron transport in the metal-graphene interface for the two configurations of large (I) and small (II) grains of metal films. The arrows in red demonstrate possible tunneling paths for electrons.

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/content/aip/journal/apl/102/3/10.1063/1.4789554
2013-01-24
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Probing into the metal-graphene interface by electron transport measurements
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/3/10.1063/1.4789554
10.1063/1.4789554
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