Nonlinear discretization scheme for the density-gradient equations

Nonlinear discretization scheme for the density-gradient equations
复制标题

密度梯度方程的非线性离散化格式

DOI:
10.1109/sispad.2000.871241
复制
发表时间:
2000
期刊:
2000 International Conference on Simulation Semiconductor Processes and Devices (Cat. No.00TH8502)
影响因子:
--
通讯作者:
B. Biegel
B. Biegel
中科院分区:
--
文献类型:
--
作者:
M. Ancona;B. Biegel

文献摘要

被引文献

相似文献

密度梯度理论使得能够对电子器件进行面向工程的分析,其中量子限制和隧道现象很重要(Ancona 和 Tiersten,1987;Ancona,1990;Ancona 等人,1999)。提出了密度梯度方程的非线性三点离散。新方法是一种指数拟合方案,使用涉及量子限制和隧道效应的数值示例进行了评估。非线性离散化的性能远好于传统的线性版本,可以大大简化网格细化,特别是在隧道问题中。
Density-gradient theory enables engineering-oriented analyses of electronic devices in which quantum confinement and tunneling phenomena are significant (Ancona and Tiersten, 1987; Ancona, 1990; Ancona et al, 1999). A nonlinear three-point discretization of the density-gradient equations is presented. The new method, an exponential-fitting scheme, is evaluated using numerical examples involving both quantum confinement and tunneling. The nonlinear discretization is shown to perform far better than the conventional linear version allowing for a substantial easing in the mesh refinement, especially in tunneling problems.