We report phase coherent electron transport in PbTe nanowire networks with a loop geometry. Magnetoconductance shows Aharonov-Bohm (AB) oscillations with periods of $h/e$ and $h/2e$ in flux. The amplitudes of $h/2e$ oscillations are enhanced near zero magnetic field, possibly due to interference between time-reversal paths. Temperature dependence of the AB amplitudes suggests a phase coherence length $\sim 812\mu \mathrm{m}$ at 50 mK. This length scale is larger than the typical geometry of PbTe-based hybrid semiconductor-superconductor nanowire devices.

中文翻译：

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在 PbTe 纳米线网络中观察 Aharonov-Bohm 效应

我们报告了具有环路几何形状的 PbTe 纳米线网络中的相位相干电子传输。磁导显示 Aharonov-Bohm (AB) 振荡，周期为$H/e$和$H/2e$在不断变化。的幅度$H/2e$振荡在零磁场附近增强，可能是由于时间反转路径之间的干扰。AB 幅度的温度依赖性表明相位相干长度$～812\mu \mathrm{米}$在 50 mK。该长度尺度大于基于 PbTe 的混合半导体-超导体纳米线器件的典型几何形状。