We report phase coherent electron transport in PbTe nanowire networks with a loop geometry. Magneto-conductance shows Aharonov-Bohm (AB) oscillations with periods of h/e and h/2e in flux. The amplitude of h/2e oscillations is enhanced near zero magnetic field, possibly due to interference between time-reversal paths. Temperature dependence of the AB amplitudes suggests a phase coherence length ∼ 8 - 12 μm at 50 mK. This length scale is larger than the typical geometry of PbTe-based hybrid semiconductor-superconductor nanowire devices.
@article{arxiv.2112.11900,
title = {Observation of Aharonov-Bohm effect in PbTe nanowire networks},
author = {Zuhan Geng and Zitong Zhang and Fangting Chen and Shuai Yang and Yuying Jiang and Yichun Gao and Bingbing Tong and Wenyu Song and Wentao Miao and Ruidong Li and Yuhao Wang and Qinghua Zhang and Fanqi Meng 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:2112.11900},
year = {2022}
}
Comments
Raw data and processing codes within this paper are available at https://zenodo.org/record/5798424