Mapping the topological proximity-induced gap of multiterminal Josephson junctions
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909427878068224 |
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| author | Wisne, Maxwell Deng, Yanpei Lilja, Markus Hakonen, Pertti Chandrasekhar, Venkat |
| author_facet | Wisne, Maxwell Deng, Yanpei Lilja, Markus Hakonen, Pertti Chandrasekhar, Venkat |
| contents | Multiterminal Josephson junctions (MTJJs), devices in which a normal metal is in contact with three or more superconducting leads, have been proposed as artificial analogs of topological crystals. The topological nature of MTJJs manifests as a modulation of the quasiparticle density of states (DOS) in the normal metal that may be probed by tunneling measurements. We show that one can reveal this modulation by measuring the resistance of diffusive MTJJs with normal contacts, which shows rich structure as a function of the phase differences $\{ϕ_i \}$. Our approach demonstrates a simple yet powerful technique for exploring topological effects in MTJJs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_09023 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Mapping the topological proximity-induced gap of multiterminal Josephson junctions Wisne, Maxwell Deng, Yanpei Lilja, Markus Hakonen, Pertti Chandrasekhar, Venkat Mesoscale and Nanoscale Physics Multiterminal Josephson junctions (MTJJs), devices in which a normal metal is in contact with three or more superconducting leads, have been proposed as artificial analogs of topological crystals. The topological nature of MTJJs manifests as a modulation of the quasiparticle density of states (DOS) in the normal metal that may be probed by tunneling measurements. We show that one can reveal this modulation by measuring the resistance of diffusive MTJJs with normal contacts, which shows rich structure as a function of the phase differences $\{ϕ_i \}$. Our approach demonstrates a simple yet powerful technique for exploring topological effects in MTJJs. |
| title | Mapping the topological proximity-induced gap of multiterminal Josephson junctions |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2408.09023 |