Homointerface planar Josephson junction based on inverse proximity effect
| Autor: | Juewen Fan, Bingyan Jiang, Jiaji Zhao, Ran Bi, Jiadong Zhou, Zheng Liu, Ning Kang, Fanming Qu, Li Lu, Xiaosong Wu |
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| Přispěvatelé: | School of Materials Science and Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Superconductivity (cond-mat.supr-con)
Quantum Physics Superconducting Films Condensed Matter - Mesoscale and Nanoscale Physics Materials [Engineering] Condensed Matter::Superconductivity Condensed Matter - Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Physics and Astronomy FOS: Physical sciences Quantum Physics (quant-ph) Josephson Junction Devices |
| Popis: | The quality of a superconductor-normal metal-superconductor Josephson junction (JJ) depends crucially on the transparency of the superconductor-normal metal (S/N) interface. We demonstrate a technique for fabricating planar JJs with perfect S/N interfaces. The technique utilizes a strong inverse proximity effect discovered in Al/V$_5$S$_8$ bilayers, by which the Al layer is driven into the resistive state. The highly transparent S/N homointerface and the peculiar normal metal enable the flow of Josephson supercurrent across a 2.9 $\mu$m long weak link. Moreover, our JJ exhibits a giant critical current and a large product of the critical current and the normal state resistance. Comment: 20 pages, 9 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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