Analytical Solution to the Density-Gradient Equation for MOS Quantum Tunneling |
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Authors: | LIU Yao ZHANG Ming |
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Institution: | LIU Yao ZHANG Ming(,CHEN Li,YU Zhiping** Institute of Microelectronics,Tsinghua University,Beijing 100084,China,Department of Mathematical Sciences |
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Abstract: | Engineering-oriented simulations of quantum mechanical tunneling are often based on density-gradient(DG) theory.This paper presents an analytical solution to the DG equation for quantum tunneling through an ultra-thin oxide in a MOS capacitor with an n+ poly-silicon gate obtained using the method of matched asymptotic expansions.Tunneling boundary conditions extend the approximation into the entire region of the poly-silicon gate,oxide barrier,and substrate.An analytical solution in the form of an asymptoti... |
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Keywords: | quantum tunneling density gradient singular perturbation theory matched asymptotic expansions |
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