Gmsh

OpenBTE uses Gmsh as a backend for geometry building. Once the file mesh.msh is created, it can be imported with

from openbte import get_mesh

mesh = get_mesh()

The physical regions will then be referred to by boundary conditions. OpenBTE handles 2D and 3D geometries, although only 2D systems are currently supported. The name of physical regions associating to two periodic boundaries must end with _a and _b.