论文标题
约瑟夫森（Josephson）电感是高度弹道的半导体 - 驱动器弱环节的探针
Josephson inductance as a probe for highly ballistic semiconductor-superconductor weak links
论文作者
论文摘要
我们同时介绍了基于外延Al-Inas异质结构的Josephson电感和DC传输特征的同时测量。有限电流偏置处的约瑟夫森电感直接揭示了电流相关关系。提取透明度$ \barτ$的接近诱导的间隙，临界电流和平均值而无需相位偏差，例如，例如，〜一个接近的不合价值为$ \barτ= 0.94 $。我们的方法使我们能够深入探究非截止性制度的设备，在非截止性方案中，普通运输测量是毫无疑问的。在垂直磁场中，连接处显示了临界电流的几乎完美的Fraunhofer图案，对$ \barτ$的值不敏感。相比之下，在电感中，超电流干扰的签名证明对$ \barτ$非常敏感。
We present simultaneous measurements of Josephson inductance and DC transport characteristics of ballistic Josephson junctions based upon an epitaxial Al-InAs heterostructure. The Josephson inductance at finite current bias directly reveals the current-phase relation. The proximity-induced gap, the critical current and the average value of the transparency $\barτ$ are extracted without need for phase bias, demonstrating, e.g.,~a near-unity value of $\barτ=0.94$. Our method allows us to probe the devices deeply in the non-dissipative regime, where ordinary transport measurements are featureless. In perpendicular magnetic field the junctions show a nearly perfect Fraunhofer pattern of the critical current, which is insensitive to the value of $\barτ$. In contrast, the signature of supercurrent interference in the inductance turns out to be extremely sensitive to $\barτ$.
