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:
影响因子:
--
通讯作者:
B. Biegel
中科院分区:
文献类型:
--
作者:
M. Ancona;B. Biegel
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.