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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2403.01576 |
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| _version_ | 1866911983471689728 |
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| author | Dasgupta, Arjo Dasgupta, Indra |
| author_facet | Dasgupta, Arjo Dasgupta, Indra |
| contents | The topological phase transition in the Qi-Wu-Zhang model is studied using a real-space approach. An effective Hamiltonian for the topologically protected edge-modes in a finite-size system is developed. The topological phase transition is understood in terms of a global perturbation to the system which lifts the degeneracy of the edge-modes. The effective Hamiltonian method is also applied to a one-dimensional system with spatially varying hopping strengths to understand the impact of disorder on the edge-modes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_01576 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Gapless Edge-Modes and Topology in the Qi-Wu-Zhang Model: A Real-Space Analysis Dasgupta, Arjo Dasgupta, Indra Mesoscale and Nanoscale Physics Strongly Correlated Electrons The topological phase transition in the Qi-Wu-Zhang model is studied using a real-space approach. An effective Hamiltonian for the topologically protected edge-modes in a finite-size system is developed. The topological phase transition is understood in terms of a global perturbation to the system which lifts the degeneracy of the edge-modes. The effective Hamiltonian method is also applied to a one-dimensional system with spatially varying hopping strengths to understand the impact of disorder on the edge-modes. |
| title | Gapless Edge-Modes and Topology in the Qi-Wu-Zhang Model: A Real-Space Analysis |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2403.01576 |