Analytical treatment of cold field electron emission from a nanowall emitter

Details Analytical treatment of cold field electron emission from a nanowall emitter Analytical treatment of cold field electron emission from a nanowall emitter

2010-02-21

arxiv.org/abs/1002.3947v1

Proc. R. Soc. A, 467 (2011) 1029

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

48 pages, 4 figures

Scientific paper

This paper presents an elementary, approximate analytical treatment of cold field electron emission (CFE) from a classical nanowall. A simple model is used to bring out some of the basic physics of a class of field emitter where quantum confinement effects exist transverse to the emitting direction. A high-level methodology is presented for developing CFE equations more general than the usual Fowler-Nordheim-type (FN-type) equations, and is applied to the classical nanowall. If the nanowall is sufficiently thin, then significant transverse-energy quantization effects occur, and affect the overall form of theoretical CFE equations; also, the tunnelling barrier shape exhibits "fall-off" in the local field value with distance from the surface. A conformal transformation technique is used to derive an analytical expression for the on-axis tunnelling probability.

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