Interfering Josephson diode effect in Ta2Pd3Te5 asymmetric edge interferometer
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866917811299811328 |
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| author | Li, Yupeng Yan, Dayu Hong, Yu Sheng, Haohao Wang, Anqi Dou, Ziwei Guo, Xingchen Shi, Xiaofan Su, Zikang Lyu, Zhaozheng Qian, Tian Liu, Guangtong Qu, Fanming Jiang, Kun Wang, Zhijun Shi, Youguo Xu, Zhu-An Hu, Jiangping Lu, Li Shen, Jie |
| author_facet | Li, Yupeng Yan, Dayu Hong, Yu Sheng, Haohao Wang, Anqi Dou, Ziwei Guo, Xingchen Shi, Xiaofan Su, Zikang Lyu, Zhaozheng Qian, Tian Liu, Guangtong Qu, Fanming Jiang, Kun Wang, Zhijun Shi, Youguo Xu, Zhu-An Hu, Jiangping Lu, Li Shen, Jie |
| contents | Edge states in topological systems have attracted great interest due to their robustness and linear dispersions. Here a superconducting-proximitized edge interferometer is engineered on a topological insulator Ta2Pd3Te5 with asymmetric edges to realize the interfering Josephson diode effect (JDE), which hosts many advantages, such as the high efficiency as much as 73% at tiny applied magnetic fields with an ultra-low switching power around picowatt. As an important element to induce such JDE, the second-order harmonic in the current-phase relation is also experimentally confirmed by half-integer Shapiro steps. The interfering JDE is also accompanied by the antisymmetric second harmonic transport, which indicates the corresponding asymmetry in the interferometer, as well as the polarity of JDE. This edge interferometer offers an effective method to enhance the performance of JDE, and boosts great potential applications for future superconducting quantum devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_08478 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Interfering Josephson diode effect in Ta2Pd3Te5 asymmetric edge interferometer Li, Yupeng Yan, Dayu Hong, Yu Sheng, Haohao Wang, Anqi Dou, Ziwei Guo, Xingchen Shi, Xiaofan Su, Zikang Lyu, Zhaozheng Qian, Tian Liu, Guangtong Qu, Fanming Jiang, Kun Wang, Zhijun Shi, Youguo Xu, Zhu-An Hu, Jiangping Lu, Li Shen, Jie Mesoscale and Nanoscale Physics Edge states in topological systems have attracted great interest due to their robustness and linear dispersions. Here a superconducting-proximitized edge interferometer is engineered on a topological insulator Ta2Pd3Te5 with asymmetric edges to realize the interfering Josephson diode effect (JDE), which hosts many advantages, such as the high efficiency as much as 73% at tiny applied magnetic fields with an ultra-low switching power around picowatt. As an important element to induce such JDE, the second-order harmonic in the current-phase relation is also experimentally confirmed by half-integer Shapiro steps. The interfering JDE is also accompanied by the antisymmetric second harmonic transport, which indicates the corresponding asymmetry in the interferometer, as well as the polarity of JDE. This edge interferometer offers an effective method to enhance the performance of JDE, and boosts great potential applications for future superconducting quantum devices. |
| title | Interfering Josephson diode effect in Ta2Pd3Te5 asymmetric edge interferometer |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2306.08478 |