Abstract
We establish topological nature of Hall conductivity of graphene and other 2 crystals in 2D and 3D in the presence of inhomogeneous perturbations. To this end the lattice Weyl-Wigner formalism is employed. The nonuniform mechanical stress is considered, along with the spatially varying magnetic field. The relation of the obtained topological invariant to level counting is clarified.
| Original language | English |
|---|---|
| Article number | 2044034 |
| Journal | International Journal of Modern Physics A |
| Volume | 36 |
| Issue number | 25 |
| DOIs | |
| State | Published - 10 Sep 2021 |
Keywords
- Quantum Hall effect
- Wigner-Weyl calculus
- graphene