# Diabolical touching point in the magnetic energy levels of topological nodal-line metals

@article{Wang2020DiabolicalTP, title={Diabolical touching point in the magnetic energy levels of topological nodal-line metals}, author={Chong Wang and Zhongyi Zhang and Liqin Zhou and Hongming Weng and Chen Fang and A. Alexandradinata}, journal={Physical Review B}, year={2020} }

For three-dimensional metals, Landau levels disperse as a function of the magnetic field and the momentum wavenumber parallel to the field. In this two-dimensional parameter space, it is shown that two conically-dispersing Landau levels can touch at a diabolical point -- a Landau-Dirac point. The conditions giving rise to Landau-Dirac points are shown to be magnetic breakdown (field-induced quantum tunneling) and certain crystallographic spacetime symmetry. Both conditions are realizable in…

## One Citation

### Two-dimensional Dirac-line semimetals resistant to strong spin-orbit coupling.

- PhysicsScience bulletin
- 2022

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