4.2 Lattice and Thermal Properties

The system of differential equations discussed in Section 4.1 contains several physical material parameters. A proper modeling is crucial for a successful device simulation. While some properties are well defined for most of the materials (such as lattice constants and mass density), others (such as thermal conductivity) were subject of numerous studies yielding equivocal results. Therefore, a discussion on the choice of model is required.


S. Vitanov: Simulation of High Electron Mobility Transistors