Bandstructure of germanium (Ge)

The electron bandstructure for germanium (diamond structure) was calculated using the program Quantum Espresso (version 5.3.0). Ge is a semiconductor with a direct bandgap of 0.67 eV. The calculated bandgap was adjusted to get the right gap. The course of the calculated bands correlates to comparative bandstructures for Ge (cf. MaterialsDesign) .

Annotation:
The outcoming data of Quantum Espresso were prepared by a Matlab-Script. The script allows to choose a order of symmetry points and plots the corresponding bandstructure. Also the density of states can be plotted.

Matlab-Script:

Ge_bandstructure_plot (script to plot results)

Input files:

Ge.scf.in (SCF calculation, pw.x)
Ge.bands.in (Band calculation, pw.x)
Ge.bands.kp.in (Band projection, bands.x)

Output files:
Ge_data.zip

k-point path

Diamond structure of Ge Source: Wikipedia

Density of states