Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2354582
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The discovery is reported of simple, good approximate formulas for special elliptic functions that appear in the standard theory of Fowler-Nordheim (FN) [Proc. R. Soc. London, Ser. A 119, 173 (1914)] tunneling through an image-rounded Schottky-Nordheim [W. Schottky, Z. Phys. 15, 872 (1923); L. W. Nordheim, Proc. R. Soc. London, Ser. A 121, 626 (1928)] barrier and in the standard FN equation. The FN-exponent correction factor v can be written as v(y)approximate to 1-y(2)+(1/3)y(2) ln y, where y is the Nordheim parameter. This formula has a respectable mathematical basis, predicts exact values of v(y) to within 0.33% in 0 <= y <= 1, and can be rewritten to give (after nearly 80 years) a simple, reliable algebraic formula for the explicit dependence of v on barrier field. Significant consequences are expected. (c) 2006 American Institute of Physics.
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