Germanene#

Germanene is a material analog to graphene, but with germanium atoms instead of carbon. The structure is also buckled (meaning that each atom of the motif lies on a different \(z\) plane). The Slater-Koster model used here consists of \(s, p_x, p_y, p_z\) orbitals, and also includes spin-orbit coupling [Hattori2017]. The electronic band structure of germanene is:

../../_images/germanene_bands.png

The corresponding configuration file:

examples/germanene.txt#
SystemName: Germanene
Dimensions: 2
Lattice:
  - [3.48142212,  2.01, 0.0]
  - [3.48142212, -2.01, 0.0]
Species: Ge
Motif:
  - [0, 0, 0, 0]
  - [2.3209481, 0, -0.687496, 0]
Filling: 4
Orbitals: [s px py pz]
OnsiteEnergy:
  - [-7.9, -1.16, -1.16, -1.16]
SKAmplitudes:
  - (0, 0) -1.79 2.36 4.15 -1.04
Spin: True
SOC: 0.294
Mesh: [200, 200]
SymmetryPoints: G M K G