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Enhancement of spin injection from ferromagnet to graphene with a Cu interfacial layer
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10.1063/1.4733729
/content/aip/journal/apl/101/2/10.1063/1.4733729
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/2/10.1063/1.4733729
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Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic of NiFe/Cu/Graphene spin valve device; (b) Normalized differential conductance of Type I device at 4.2 K (square), 300 K (circle), and Type II device at 4.2 K (triangle) plotted against source-drain voltage bias. The curves are offset for clarity; (c) Normalized current vs. source-drain bias for Type I device at 4.2 K (square), 300 K (circle), and Type II device at 4.2 K (triangle). The curves are offset for clarity. Inset: Contact resistance of Type I device at 4.2 K.

Image of FIG. 2.
FIG. 2.

(a) Nonlocal MR curves obtained at various VG . A constant background is subtracted and the curves are offset for clarity; (b) Spin valve signal of two Type I devices for forward sweep (square), backward sweep (circle), and average (triangle) plotted against VG . The fitting curve is shown as black solid (dotted) line for the first (second) Type I device. The curves are offset for clarity. Inset: FET response of the graphene channel resistance. Solid (dotted) line for the first (second) Type I device.

Image of FIG. 3.
FIG. 3.

(a) Temperature dependence of the average spin valve signal (triangle) for forward and backward sweep at VG = 0 V and temperature dependence of zero bias contact resistance (square). (b) Spin polarization vs. contact resistivity comparison among graphene spin valve devices with transparent (square), intermediate (circle) and tunneling contacts (triangle). The references are indicated above the symbols. “*” denotes data from this work.

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/content/aip/journal/apl/101/2/10.1063/1.4733729
2012-07-09
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhancement of spin injection from ferromagnet to graphene with a Cu interfacial layer
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/2/10.1063/1.4733729
10.1063/1.4733729
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