Topological inverse Anderson insulator
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866910580960395264 |
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| author | Zuo, Zheng-Wei Lin, Jing-Run Kang, Dawei |
| author_facet | Zuo, Zheng-Wei Lin, Jing-Run Kang, Dawei |
| contents | A different type of topological phase dubbed topological inverse Anderson insulators is proposed, which is characterized by the disorder-induced extended bulk states from the flat-band localization and topological edge states. Based on the topological invariant, the behaviors of the localization length of the zero-energy modes, and quantum transport, we identify its existence in several all-band-flat models with the disordered potentials or hopping including the $π$-flux Creutz ladder, the fully dimerized Su-Schrieffer-Heeger chain, and $π$-flux diamond chain. Unlike the topological Anderson insulator, where disorder induces localization and exponential suppression of transport, the disorder-assisted quantum ballistic coherent transport can appear in the topological inverse Anderson insulator. In addition, our proposal and results could be realized by the current experimental techniques. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_15826 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological inverse Anderson insulator Zuo, Zheng-Wei Lin, Jing-Run Kang, Dawei Mesoscale and Nanoscale Physics Disordered Systems and Neural Networks A different type of topological phase dubbed topological inverse Anderson insulators is proposed, which is characterized by the disorder-induced extended bulk states from the flat-band localization and topological edge states. Based on the topological invariant, the behaviors of the localization length of the zero-energy modes, and quantum transport, we identify its existence in several all-band-flat models with the disordered potentials or hopping including the $π$-flux Creutz ladder, the fully dimerized Su-Schrieffer-Heeger chain, and $π$-flux diamond chain. Unlike the topological Anderson insulator, where disorder induces localization and exponential suppression of transport, the disorder-assisted quantum ballistic coherent transport can appear in the topological inverse Anderson insulator. In addition, our proposal and results could be realized by the current experimental techniques. |
| title | Topological inverse Anderson insulator |
| topic | Mesoscale and Nanoscale Physics Disordered Systems and Neural Networks |
| url | https://arxiv.org/abs/2408.15826 |