Topological Anderson insulating phases in the interacting Haldane model
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866914951204962304 |
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| author | Silva, Joao S. Castro, Eduardo V. Mondaini, Rubem Vozmediano, María A. H. López-Sancho, M. Pilar |
| author_facet | Silva, Joao S. Castro, Eduardo V. Mondaini, Rubem Vozmediano, María A. H. López-Sancho, M. Pilar |
| contents | We analyze the influence of disorder and strong correlations on the topology in two dimensional Chern insulators. A mean field calculation in the half-filled Haldane model with extended Hubbard interactions and Anderson disorder shows that disorder favors topology in the interacting case and extends the topological phase to a larger region of the Hubbard parameters. In the absence of a staggered potential, we find a novel disorder-driven topological phase with Chern number C=1, with co-existence of topology with long range spin and charge orders. More conventional topological Anderson insulating phases are also found in the presence of a finite staggered potential. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_16053 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Topological Anderson insulating phases in the interacting Haldane model Silva, Joao S. Castro, Eduardo V. Mondaini, Rubem Vozmediano, María A. H. López-Sancho, M. Pilar Strongly Correlated Electrons We analyze the influence of disorder and strong correlations on the topology in two dimensional Chern insulators. A mean field calculation in the half-filled Haldane model with extended Hubbard interactions and Anderson disorder shows that disorder favors topology in the interacting case and extends the topological phase to a larger region of the Hubbard parameters. In the absence of a staggered potential, we find a novel disorder-driven topological phase with Chern number C=1, with co-existence of topology with long range spin and charge orders. More conventional topological Anderson insulating phases are also found in the presence of a finite staggered potential. |
| title | Topological Anderson insulating phases in the interacting Haldane model |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2307.16053 |