Coulomb blockade in open superconducting islands on InAs nanowires
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arXiv
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| Hauptverfasser: | , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866915284859748352 |
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| author | Song, Huading Wang, Zhaoyu Pan, Dong Xu, Jiaye Wang, Yuqing Cao, Zhan Liu, Dong E. He, Ke Shang, Runan Zhao, Jianhua Zhang, Hao |
| author_facet | Song, Huading Wang, Zhaoyu Pan, Dong Xu, Jiaye Wang, Yuqing Cao, Zhan Liu, Dong E. He, Ke Shang, Runan Zhao, Jianhua Zhang, Hao |
| contents | Electrons in closed systems can exhibit Coulomb blockade (CB) oscillations due to charge quantization. Here, we report CB oscillations in aluminum superconducting islands on InAs nanowires in the open regime. The Al island is connected to the source/drain leads through two contacts: One is fully transmitting while the other is tuned into the tunneling regime. This device configuration is typical for tunneling spectroscopy where charging energy is generally considered negligible. The oscillation periods are 2$e$ or 1$e$, depending on the gate settings. A magnetic field can induce the 2$e$ to 1$e$ transition. Our result is reminiscent of the "mesoscopic Coulomb blockade" in open quantum dots caused by electron interference. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_06597 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coulomb blockade in open superconducting islands on InAs nanowires Song, Huading Wang, Zhaoyu Pan, Dong Xu, Jiaye Wang, Yuqing Cao, Zhan Liu, Dong E. He, Ke Shang, Runan Zhao, Jianhua Zhang, Hao Mesoscale and Nanoscale Physics Electrons in closed systems can exhibit Coulomb blockade (CB) oscillations due to charge quantization. Here, we report CB oscillations in aluminum superconducting islands on InAs nanowires in the open regime. The Al island is connected to the source/drain leads through two contacts: One is fully transmitting while the other is tuned into the tunneling regime. This device configuration is typical for tunneling spectroscopy where charging energy is generally considered negligible. The oscillation periods are 2$e$ or 1$e$, depending on the gate settings. A magnetic field can induce the 2$e$ to 1$e$ transition. Our result is reminiscent of the "mesoscopic Coulomb blockade" in open quantum dots caused by electron interference. |
| title | Coulomb blockade in open superconducting islands on InAs nanowires |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2410.06597 |