Mesoscopic transport in a Chern mosaic
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866918460786737152 |
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| author | Bhattacharjee, Sayak May-Mann, Julian Kwan, Yves H. Devakul, Trithep Sharpe, Aaron |
| author_facet | Bhattacharjee, Sayak May-Mann, Julian Kwan, Yves H. Devakul, Trithep Sharpe, Aaron |
| contents | We analyze mesoscopic electronic transport in a Chern mosaic: a regular pattern of domains whose electronic bands carry differing local Chern numbers. An example platform where a Chern mosaic can arise is a moiré heterostructure, where variations in the local moiré parameters can produce such domains. We compute resistances at linear response for a variety of domain wall network geometries at zero temperature and magnetic field. Simple domain configurations can exhibit zero, integer, or fractional multiples of the quantum of resistance in both the longitudinal and transverse (Hall) responses. Our simple semi-classical analysis provides a useful computational method and comparative catalog for ongoing experiments in two-dimensional topological materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_08654 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Mesoscopic transport in a Chern mosaic Bhattacharjee, Sayak May-Mann, Julian Kwan, Yves H. Devakul, Trithep Sharpe, Aaron Mesoscale and Nanoscale Physics Strongly Correlated Electrons We analyze mesoscopic electronic transport in a Chern mosaic: a regular pattern of domains whose electronic bands carry differing local Chern numbers. An example platform where a Chern mosaic can arise is a moiré heterostructure, where variations in the local moiré parameters can produce such domains. We compute resistances at linear response for a variety of domain wall network geometries at zero temperature and magnetic field. Simple domain configurations can exhibit zero, integer, or fractional multiples of the quantum of resistance in both the longitudinal and transverse (Hall) responses. Our simple semi-classical analysis provides a useful computational method and comparative catalog for ongoing experiments in two-dimensional topological materials. |
| title | Mesoscopic transport in a Chern mosaic |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2604.08654 |