Modified Fowler-Nordheim field emission formulae from a nonplanar emitter model

Kazuya Yuasa*, Ayumi Shimoi, Ichiro Ohba, Chuhei Oshima

*この研究の対応する著者

研究成果: Article査読

27 被引用数 (Scopus)

抄録

Field emission formulae, current-voltage characteristics and energy distribution of emitted electrons, are derived analytically for a nonplanar (hyperboloidal) metallic emitter model. The traditional Fowler-Nordheim (F-N) formulae, which are derived from a planar emitter model, are modified, and the assumption of the planar emitter in the F-N model is reconsidered. Our analytical calculation also reveals the backgrounds of the previous numerical discussion by He et al. on the effect of the geometry of emitter on field emission. The new formulae contain a parameter which characterizes the sharpness of the hyperboloidal emitter, and experimental data of field emissions from clean tungsten emitters and nanotip emitters are analyzed by making use of this feature.

本文言語English
ページ(範囲)18-28
ページ数11
ジャーナルSurface Science
520
1-2
DOI
出版ステータスPublished - 2002 11 20

ASJC Scopus subject areas

  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 材料化学

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