Planar force-constant method for lattice dynamics of cubic III-nitrides

Planar Force-Constant Method for Lattice Dynamics of Cubic III-Nitrides

Using the density-functional theory within the Full Potential Linear Augmented PlaneWave (FP-LAPW) method, we have calculated, in this work, the equation of state, the e ective charges and the phonon dispersion along [100] and [111] directions for the cubic III-Nitrides(c-BN, c-AlN, c-GaN and c-InN), including hydrostatic strains dependence. A good agreement with the micro-Raman scattering expe...

Method and apparatus for producing group-III nitrides

Centered Cubic Lattice Method Comparison

The Centered Cubic Lattice method is used for an iso-surface extraction. This paper focuses on its comparison with other fundamental methods (Marching Cubes, Marching Tetrahedra) that are also used to extract an iso-surface from regular volume data. Iso-surfaces that are generated using above mentioned methods and mathematical data are compared due to area and volume approximation. The Hausdorf...

Electron Mobility Models for III-Nitrides

In this work we present mobility models for electrons suitable for the drift-diffusion and the hydrodynamic transport models. The models describe specific effects, such as the negative differential mobility observed at high electric fields. The models are calibrated against Monte Carlo simulation results and experimental data for GaN, AlN, and InN. The models are suitable for implementation in ...

Dynamical and thermodynamic properties of III-nitrides

In this work, we have calculated ab initio the equation of state, the principal phonon modes, the effective charges and the temperature dependence of the specific heat for the III-Nitrides, by using the density-functional theory within the local density approximation, plane wave expansions and the pseudopotential method. A good agreement with the experiment and other calculations is obtained, w...