Anomalous Josephson Effect in Topological Insulator-Based Josephson Trijunction  

作　　者：Xiang Zhang Zhaozheng Lyu Guang Yang Bing Li Yan-Liang Hou Tian Le Xiang Wang Anqi Wang Xiaopei Sun Enna Zhuo Guangtong Liu Jie Shen Fanming Qu Li Lu 张祥;吕昭征;杨光;李冰;侯延亮;乐天;王翔;王安琪;孙晓培;卓恩娜;刘广同;沈洁;屈凡明;吕力(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Huairou Division,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China)

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [3]Huairou Division,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [4]Songshan Lake Materials Laboratory,Dongguan 523808,China

出　　处：《Chinese Physics Letters》2022年第1期31-35,共5页中国物理快报（英文版）

基　　金：supported by the National Basic Research Program of China (Grant Nos. 2016YFA0300601, 2017YFA0304700, and 2015CB921402);the National Natural Science Foundation of China (Grant Nos. 11527806, 92065203, 12074417, 11874406, and 11774405);the Beijing Academy of Quantum Information Sciences (Grant No. Y18G08);the Strategic Priority Research Program B of Chinese Academy of Sciences (Grant Nos. XDB33010300, XDB28000000, and XDB07010100);the Synergetic Extreme Condition User Facility sponsored by the National Development and Reform Commission。

摘　　要：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.

关 键 词：COMPUTATION JOSEPHSON TOPOLOGICAL 

分 类 号：O469[理学—凝聚态物理]