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Atomically-thin crystalline films and ribbons of bismuth telluride
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10.1063/1.3280078
/content/aip/journal/apl/96/5/10.1063/1.3280078
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/5/10.1063/1.3280078
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of atomic fivefolds, referred to as quintuples, which are building blocks of crystal. The fivefolds are bound to each other via weak van der Waals forces, which allow for their mechanical exfoliation.

Image of FIG. 2.
FIG. 2.

SEM images of quasi 2D bismuth telluride crystals demonstrating the possibilities of the exfoliation technique. (a) Few-atomic-layer Bi–Te crystals suspended across a trench in wafer. Note that the sides of the trench are clearly seen through the film owing to its few-atomic thickness. (b) Long suspended ribbon made of quasi 2D bismuth telluride crystal. (c) Large-area uniform atomic fivefold of rhombic shape.

Image of FIG. 3.
FIG. 3.

(a) SAED pattern indicating that the atomically-thin films of bismuth telluride are crystalline. (b) Fabricated device structure to test the electrical properties of the quasi 2D bismuth telluride crystals.

Image of FIG. 4.
FIG. 4.

Current as a function of temperature in Bi–Te atomic crystals shown for different source—drain voltages. Inset shows current—voltage characteristics of a device in the low-bias region for different temperature.

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/content/aip/journal/apl/96/5/10.1063/1.3280078
2010-02-01
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Atomically-thin crystalline films and ribbons of bismuth telluride
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/5/10.1063/1.3280078
10.1063/1.3280078
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