Flat bands in three-dimensional lattice models with non-trivial Hopf index
We report the presence of exactly and nearly flat bands with non-trivial topology in three-dimensional (3D) lattice models. We first show that an exactly flat band can be realized in a 3D lattice model characterized by a 3D topological invariant, namely Hopf invariant. In contrast, we find another d...
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| Hlavní autoři: | , |
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| Médium: | Artigo |
| Jazyk: | Inglês |
| Vydáno: |
IOP Publishing
2024-01-01
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| Edice: | New Journal of Physics |
| Témata: | |
| On-line přístup: | https://doi.org/10.1088/1367-2630/ad668a |
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