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 work, we show the induced superconductivity in a PbTe nanowire epitaxially coupled to a superconductor Pb. The Josephson junction device based on this hybrid reveals 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 like gate-tunable qubits in a new semiconductor system.
@article{arxiv.2212.02132,
title = {Proximity effect in PbTe-Pb hybrid nanowire Josephson junctions},
author = {Zitong Zhang and Wenyu Song and Yichun Gao and Yuhao Wang and Zehao Yu and Shuai Yang and Yuying Jiang and Wentao Miao and Ruidong Li and Fangting Chen and Zuhan Geng and Qinghua Zhang and Fanqi Meng and Ting Lin and Lin Gu and Kejing Zhu and Yunyi Zang and Lin Li and Runan Shang and Xiao Feng and Qi-Kun Xue and Ke He and Hao Zhang},
journal= {arXiv preprint arXiv:2212.02132},
year = {2023}
}
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Raw data and processing codes within this paper are available at: https://doi.org/10.5281/zenodo.7398019