Theory of Electron Emission in High Fields from Atomically Sharp Emitters:1.Applicability of the Fowler-Nordheim Model

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Jun He
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Theory of Electron Emission in High Fields from Atomically Sharp Emitters; Sharp;
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Field emission from metallic emitter tips is generally described by the Fowl-er-Nordheim theory, which is based on a planar model of the tip with a classical imagecorrection. Within the free electron model and the WKB approximation, the planar tipmodel leads to the well-known Fowler-Nordheim cquation. The form of this equationpredicts that a plot of log J/ F~2 versus 1/F; where J is the current density and F, the
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