Rhombohedral graphite junctions as a platform for continuous tuning between topologically trivial and non-trivial electronic phases
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866918530575761408 |
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| author | Soneji, Luke Crampin, Simon Mucha-Kruczynski, Marcin |
| author_facet | Soneji, Luke Crampin, Simon Mucha-Kruczynski, Marcin |
| contents | Manipulating the topological properties of quantum states can provide a way to protect them against disorder. However, typically, changing the topology of electronic states in a crystalline material is challenging because their nature is underpinned by chemical composition and lattice symmetry that are difficult to modify. We propose junctions between rhombohedral graphite crystals as a platform that enables smooth transition between topologically trivial and non-trivial regimes distinguished by the absence or presence of topological junction states. By invoking an analogy with the Su-Schrieffer-Heeger model, the appearance of topological states is related to the symmetry of the atomic stacking at the interface between the crystals. The possibility to explore both the topological and non-topological phases is provided by sliding the crystals with respect to each other. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_06759 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rhombohedral graphite junctions as a platform for continuous tuning between topologically trivial and non-trivial electronic phases Soneji, Luke Crampin, Simon Mucha-Kruczynski, Marcin Mesoscale and Nanoscale Physics Other Condensed Matter Manipulating the topological properties of quantum states can provide a way to protect them against disorder. However, typically, changing the topology of electronic states in a crystalline material is challenging because their nature is underpinned by chemical composition and lattice symmetry that are difficult to modify. We propose junctions between rhombohedral graphite crystals as a platform that enables smooth transition between topologically trivial and non-trivial regimes distinguished by the absence or presence of topological junction states. By invoking an analogy with the Su-Schrieffer-Heeger model, the appearance of topological states is related to the symmetry of the atomic stacking at the interface between the crystals. The possibility to explore both the topological and non-topological phases is provided by sliding the crystals with respect to each other. |
| title | Rhombohedral graphite junctions as a platform for continuous tuning between topologically trivial and non-trivial electronic phases |
| topic | Mesoscale and Nanoscale Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2504.06759 |