Quantized Conductance in PbTe Nanowire Devices

Reducing disorder in Majorana nanowire experiments is essential to exploring theoretical properties of ballistic transport. A measure of wire disorder can be approximated by examining the conductance, with clean nanowires presenting evident quantized conductance plateaus. Previous experiments, using InSb or InAs nanowires, have failed to generically exhibit zero-field quantized conductance. We present here evidence of quantized conductance in PbTe nanowire devices grown using the selective-area-growth (SAG) method on an InP substrate. These clear plateaus at zero-field, observed in voltage sweeps of the source and drain and the gate, may indicate that these nanowires present a relatively disorder-free material platform for future experiments.