Hopf characterization of two-dimensional Floquet topological insulators
We present a topological characterization of time-periodically driven two-band models in 2+1 dimensions as Hopf insulators. The intrinsic periodicity of the Floquet system with respect to both time and the underlying two-dimensional momentum space constitutes a map from a three-dimensional torus to...
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| Auteurs principaux: | , , |
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| Format: | Artigo |
| Langue: | Inglês |
| Publié: |
American Physical Society
2019-09-01
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| Collection: | Physical Review Research |
| Accès en ligne: | http://doi.org/10.1103/PhysRevResearch.1.022003 |
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