Gate-tunable superconductor-semiconductor coupling and its impact on zero-energy modes in PbTe-Pb nanowires

@misc{li2026gatetunable,
  title = {{Gate-tunable superconductor-semiconductor coupling and its impact on zero-energy modes in PbTe-Pb nanowires}},
  author = {Ruidong Li and Shuai Yang and Wenyu Song and Zeyu Yan and Yuhao Wang and Zehao Yu and Li Chen and Zixun Xia and Zonglin Li and Shan Zhang and Jiaye Xu and Lining Yang and Weizhao Wang and Xiao Feng and Tiantian Wang and Yunyi Zang and Lin Li and Runan Shang and Dong E. Liu and Qi-Kun Xue and Ke He and Hao Zhang},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.02411},
  eprint = {2611.02411},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.02411},
}

TY  - UNPB
TI  - Gate-tunable superconductor-semiconductor coupling and its impact on zero-energy modes in PbTe-Pb nanowires
AU  - Ruidong Li
AU  - Shuai Yang
AU  - Wenyu Song
AU  - Zeyu Yan
AU  - Yuhao Wang
AU  - Zehao Yu
AU  - Li Chen
AU  - Zixun Xia
AU  - Zonglin Li
AU  - Shan Zhang
AU  - Jiaye Xu
AU  - Lining Yang
AU  - Weizhao Wang
AU  - Xiao Feng
AU  - Tiantian Wang
AU  - Yunyi Zang
AU  - Lin Li
AU  - Runan Shang
AU  - Dong E. Liu
AU  - Qi-Kun Xue
AU  - Ke He
AU  - Hao Zhang
PY  - 2026
DA  - 2026/11/02
PB  - arXiv
DO  - 10.48550/arxiv.2611.02411
UR  - https://arxiv.org/abs/2611.02411
AB  - Superconductor-semiconductor coupling in hybrid nanowires plays a pivotal role in Majorana devices. Here, we demonstrate this tunable coupling in PbTe-Pb nanowires and its impact on the induced gap and zero-bias peaks (ZBPs). In the strong coupling regime, the device reveals a clean superconducting gap, where robust and non-robust ZBPs are observed in distinct magnetic field ranges. Conversely, increasing the gate voltage drives the system toward the weak coupling regime, where the gap becomes narrow and soft. Consequently, robust ZBPs disappear while non-robust ones persist. Our results establish a direct link between tunable coupling and robust ZBPs, providing guidelines on engineering Majorana zero modes and topological qubits.
ER  -