High Critical-Current Superconductor-InAs Nanowire-Superconductor Junctions
High Critical-Current Superconductor-InAs Nanowire-Superconductor Junctions
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DOI：
10.1021/nl302740f
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发表时间：
2012-11-01
期刊：
影响因子：
10.8
通讯作者：
Delsing, Per
中科院分区：
文献类型：
--
作者：
Abay, Simon;Nilsson, Henrik;Delsing, Per
我们报道了具有高临界电流和宽范围可调电导的InAs纳米线耦合到超导引线的制备。我们实施了一种双剥离纳米纤维的方法，得到非常短的纳米线器件与欧姆接触。我们观察到非常高的临界值。在直径为80 nm的导线中，电流高达800 nA。较长的纳米线和悬浮的纳米线的电流-电压特性显示，无论是。库仑阻塞或超电流取决于局部栅极电压，在单个器件中结合不同的传输机制。
We report on the fabrication of InAs nanowires coupled to superconducting leads with high critical current and widely tunable conductance. We implemented a double lift off nanofabrication Method to get very short nanowire devices with Ohmic contacts. We observe very high critical. currents of up to 800 nA in a wire with a diameter of 80 nm. The current- voltage characteristics of longer and suspended nanowires display,either. Coulomb blockade or supercurrent depending on a local gate voltage, combining different regimes of transport in a single device.