Broad and colossal edge supercurrent in Dirac semimetal Cd3As2 Josephson junctions

Chun Guang Chu, Jing Jing Chen, An Qi Wang*, Zhen Bing Tan*, Cai Zhen Li, Chuan Li, Alexander Brinkman, Peng Zhan Xiang, Na Li, Zhen Cun Pan, Hai Zhou Lu, Dapeng Yu, Zhi Min Liao*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

Edge supercurrent has attracted great interest recently due to its crucial role in achieving and manipulating topological superconducting states. Proximity-induced superconductivity has been realized in quantum Hall and quantum spin Hall edge states, as well as in higher-order topological hinge states. Non-Hermitian skin effect, the aggregation of non-Bloch eigenstates at open boundaries, promises an abnormal edge channel. Here we report the observation of broad edge supercurrent in Dirac semimetal Cd3As2-based Josephson junctions. The as-grown Cd3As2 nanoplates are electron-doped by intrinsic defects, which enhance the non-Hermitian perturbations. The superconducting quantum interference indicates edge supercurrent with a width of ~1.6 μm and a magnitude of ~1 μA at 10 mK. The wide and large edge supercurrent is inaccessible for a conventional edge system and suggests the presence of non-Hermitian skin effect. A supercurrent nonlocality is also observed. The interplay between band topology and non-Hermiticity is beneficial for exploiting exotic topological matter.

源语言英语
文章编号6162
期刊Nature Communications
14
1
DOI
出版状态已出版 - 12月 2023
已对外发布

指纹

探究 'Broad and colossal edge supercurrent in Dirac semimetal Cd3As2 Josephson junctions' 的科研主题。它们共同构成独一无二的指纹。

引用此