ABSTRACT
The implementation of algorithms is a laborious task last but not least because it requires intensive testing before the corresponding code is sufficiently robust and reliable in its response to explore new territories of applications. This statements turned out to be also true for the integrated device/circuit simulation tool. This chapter deals with the stability problem that was finally solved after an in-depth analysis of the eigenvalue spectra of small-scaled devices. It considers a twisted piece of metal in oxide. An essential ingredient in the set up of the field dependence is the freedom to choose different gauge conditions. Although it is not essential in the use of the simulator one may set magnetic Neumann boundary conditions. The first attempt to apply them on our test structure gives the eigenvalue spectrum.
