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*
1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China3 Huairou Division, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China4 Songshan Lake Materials Laboratory, Dongguan 523808, China
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.
收稿日期: 2021-11-09
Express Letter
出版日期: 2021-12-13
:
74.45.+c
(Proximity effects; Andreev reflection; SN and SNS junctions)
03.65.Vf
(Phases: geometric; dynamic or topological)
71.70.Ej
(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
73.40.-c
(Electronic transport in interface structures)
引用本文:
. [J]. 中国物理快报, 2022, 39(1): 17401-017401.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/39/1/017401
或
https://cpl.iphy.ac.cn/CN/Y2022/V39/I1/17401
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2022, Vol. 39 
