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

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Magnitude and Spatial Distribution Control of the Supercurrent in Bi2O2Se-Based Josephson Junction
Nano Letters ( IF 9.6 ) Pub Date : 2020-03-23 , DOI: 10.1021/acs.nanolett.0c00025
Jianghua Ying _{1,

2} , Jiangbo He _{1,

2} , Guang Yang _{1,

2} , Mingli Liu _{1,

2} , Zhaozheng Lyu _{1,

2} , Xiang Zhang _{1,

2} , Huaiyuan Liu _{1,

3} , Kui Zhao _{1,

2} , Ruiyang Jiang _{1,

2} , Zhongqing Ji _{1,

4} , Jie Fan _{1,

4} , Changli Yang ₁ , Xiunian Jing _{1,

4} , Guangtong Liu _{1,

4} , Xuewei Cao ₃ , Xuefeng Wang ₅ , Li Lu _{1,

2,

4,

6,

7} , Fanming Qu _{1,

2,

4,

6}

Affiliation

Many proposals for exploring topological quantum computation are based on superconducting quantum devices constructed on materials with strong spin–orbit coupling (SOC). For these devices, full control of both the magnitude and the spatial distribution of the supercurrent is highly demanded, but has been elusive up to now. We constructed a 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.

中文翻译：

Bi ₂ O ₂ Se基约瑟夫森结中超电流的幅度和空间分布控制

探索拓扑量子计算的许多建议都是基于具有强自旋轨道耦合（SOC）的材料构造的超导量子装置。对于这些设备，强烈要求完全控制超电流的大小和空间分布，但是到目前为止，这还难以捉摸。我们在Bi ₂ O ₂ Se纳米板上构建了一种接近型的约瑟夫森结，Bi ₂ O ₂ Se是一种新兴的具有强SOC的新兴半导体。通过电气门控，我们表明可以完全打开和关闭超电流，并且可以通过整体或沿边缘配置其实际空间路径。我们的工作证明了Bi ₂ O ₂硒作为构建多功能混合超导器件以及寻找拓扑超导性的有前途的平台。

更新日期：2020-04-24

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