Classification of critical points in energy bands based on topology, scaling, and symmetry
A critical point of the energy dispersion is the momentum where electron velocity vanishes. At the corresponding energy, the density of states (DOS) exhibits nonanalyticity such as divergence. Critical points can be first classified as ordinary and high-order ones, and the ordinary critical points h...
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society (APS),
2020-06-15T20:40:31Z.
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| Subjects: | |
| Online Access: | Get fulltext |