Parallel parameter study of the Wigner-Poisson equations for RTDs

We will discuss a parametric study of the solution of the Wigner-Poisson equations for resonant tunneling diodes. These structures exhibit self-sustaining oscillations in certain operating regimes. We will describe the engineering consequences of our study and how it is a significant advance from some previous work, which used much coarser grids. We use LOCA and other packages in the Trilinos framework from Sandia National Laboratory to enable efficient parallelization of the solution methods and to perform bifurcation analysis of this model. We report on the parallel efficiency and scalability of our implementation. 1 Corresponding author 2 Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed-Martin Company, for the United States Department of Energy under Contract DE-AC04-94AL85000 3 E-mail addresses: [email protected] (M. S. Lasater), tim [email protected] (C. T. Kelley), [email protected] (A. G. Salinger), [email protected] (D. L. Woolard), [email protected] (P. Zhao), Preprint submitted to Elsevier Science 7 January 2005