| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Anomalous Josephson Effect in Topological Insulator-Based Josephson Trijunction |
| Xiang Zhang1,2, Zhaozheng Lyu1, Guang Yang1,2, Bing Li1,2, Yan-Liang Hou1,2, Tian Le1, Xiang Wang1,2, Anqi Wang1,2, Xiaopei Sun1,2, Enna Zhuo1,2, Guangtong Liu1,3,4, Jie Shen1,3, Fanming Qu1,3,4, and Li Lu1,2,3,4* |
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
3Huairou Division, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
4Songshan Lake Materials Laboratory, Dongguan 523808, China
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| Cite this article: |
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Xiang Zhang, Zhaozheng Lyu, Guang Yang et al 2022 Chin. Phys. Lett. 39 017401 |
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Abstract We studied anomalous Josephson effect (AJE) in Josephson trijunctions fabricated on Bi$_2$Se$_3$, and found that the AJE in T-shaped trijunctions significantly alters the Majorana phase diagram of the trijunctions, when an in-plane magnetic field is applied parallel to two of the three single junctions. Such a phenomenon in topological insulator-based Josephson trijunction provides unambiguous evidence for the existence of AJE in the system, and may provide an additional knob for controlling the Majorana bound states in the Fu–Kane scheme of topological quantum computation.
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Received: 09 November 2021
Express Letter
Published: 13 December 2021
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| PACS: |
74.45.+c
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(Proximity effects; Andreev reflection; SN and SNS junctions)
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03.65.Vf
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(Phases: geometric; dynamic or topological)
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71.70.Ej
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(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
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73.40.-c
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(Electronic transport in interface structures)
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