论文标题
接近纳米线的栅极可调动感
Gate-tunable kinetic inductance in proximitized nanowires
论文作者
论文摘要
我们报告了在混合INAS/Al Nanowire中检测栅极可调动力的。为此，我们将纳米线嵌入了四分之一波的共面波导谐振器中，并测量了电路的谐振频率。我们发现，可以通过控制近端半导体的电子密度，从而改变纳米线电感的栅极电压更改谐振频率。采用Mattis-Bardeen理论，我们提取纳米线正常状态电导率的栅极依赖性及其超导间隙。我们的测量值补充了混合纳米线的现有表征方法，并为栅极控制的超导电子产品提供了一种新的有用工具。
We report the detection of a gate-tunable kinetic inductance in a hybrid InAs/Al nanowire. For this purpose, we have embedded the nanowire into a quarter-wave coplanar waveguide resonator and measured the resonance frequency of the circuit. We find that the resonance frequency can be changed via the gate voltage that controls the electron density of the proximitized semiconductor and thus the nanowire inductance. Applying Mattis-Bardeen theory, we extract the gate dependence of the normal state conductivity of the nanowire, as well as its superconducting gap. Our measurements complement existing characterization methods for hybrid nanowires and provide a new and useful tool for gate-controlled superconducting electronics.
