Proximity effect in PbTe-Pb hybrid nanowire Josephson junctions

作者：Zitong Zhang, Wenyu Song, Yichun Gao, Yuhao Wang, Zehao Yu, Shuai Yang, Yuying Jiang, Wentao Miao, Ruidong Li, Fangting Chen, Zuhan Geng, Qinghua Zhang, Fanqi Meng, Ting Lin, Lin Gu, Kejing Zhu, Yunyi Zang, Lin Li, Runan Shang, Xiao Feng, Qi-Kun Xue, Ke He, Hao Zhang · 发表于：Physical Review Materials · 年份：2023 · DOI：10.1103/physrevmaterials.7.086201 · 被引用次数：21 · 研究领域：Topological Materials and Phenomena、Physics of Superconductivity and Magnetism、Quantum and electron transport phenomena

Semiconductor-superconductor hybrid nanowires are a leading material platform for the realization of Majorana zero modes. The semiconductors in previous studies are dominantly InAs or InSb. In this paper, we show the induced superconductivity in PbTe nanowires epitaxially coupled to a superconductor Pb. The Josephson junction devices based on this hybrid reveal a gate-tunable supercurrent in the open regime and a hard superconducting gap in the tunneling regime. By demonstrating the superconducting proximity effect, our result can enable Majorana searches and other applications, such as gate-tunable qubits in a new material platform.