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arXiv · 2004.04311

Magnitude and Spatial Distribution Control of the Supercurrent in Bi2O2Se-Based Josephson Junction

Jianghua Ying·Jiangbo He·Guang Yang·Mingli Liu·Zhaozheng Lyu·Xiang Zhang·Huaiyuan Liu·Kui Zhao·Ruiyang Jiang·Zhongqing Ji·Jie Fan·Changli Yang·Xiunian Jing·Guangtong Liu·Xuewei Cao·Xuefeng Wang·Li Lu·Fanming Qu
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Abstract

Many proposals in exploring topological quantum computation are based on superconducting quantum devices constructed on materials with strong spin-orbit coupling (SOC). For these devices, a full control on both the magnitude and the spatial distribution of the supercurrent would be highly demanded, but has been elusive up to now. We constructed proximity-type Josephson junction on nanoplates of Bi2O2Se, a new emerging semiconductor with strong SOC. Through electrical gating, we show that the supercurrent can be fully turned ON and OFF, and its real-space pathways can be configured either through the bulk or along the edges. Our work demonstrates Bi2O2Se as a promising platform for constructing multifunctional hybrid superconducting devices as well as for searching for topological superconductivity.

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Jianghua Ying, Jiangbo He, Guang Yang, Mingli Liu, Zhaozheng Lyu, Xiang Zhang, Huaiyuan Liu, Kui Zhao, Ruiyang Jiang, Zhongqing Ji, Jie Fan, Changli Yang, Xiunian Jing, Guangtong Liu, Xuewei Cao, Xuefeng Wang, Li Lu, Fanming Qu. 2020-04-09. Magnitude and Spatial Distribution Control of the Supercurrent in Bi2O2Se-Based Josephson Junction. https://doi.org/10.1021/acs.nanolett.0c00025

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