论文标题
超电流和相滑，嵌入到范德华异质结构中的弹道碳纳米管中
Supercurrent and phase slips in a ballistic carbon nanotube embedded into a van der Waals heterostructure
论文作者
论文摘要
我们在HBN和NBSE $ _2 $之间的范德华堆栈中封装了几微米长的碳纳米管中的远程超导相关性。我们表明，在NBSE $ _2 $ Crystal下方的纳米管部分以及通过与之接触的2 $μ$ M长的部分中，大量的超电流流穿过NBSE $ _2 $ Crystal的纳米管段。正如纳米镜横截面的超导体所预期的那样，由于相滑中心的成核，电流诱导的超导性分解的特征在于电阻步骤。混合设备的所有元素都是几个最近提议的设置的主动构建块，用于实现碳纳米管中的主要纳米植物。
We demonstrate long-range superconducting correlations in a several micrometer-long carbon nanotube encapsulated in a van der Waals stack between hBN and NbSe$_2$. We show that a substantial supercurrent flows through the nanotube section beneath the NbSe$_2$ crystal as well as through the 2 $μ$m-long section not in contact with it. As expected for superconductors of nanoscopic cross section, the current-induced breakdown of superconductivity is characterized by resistance steps due to the nucleation of phase slip centers. All elements of our hybrid device are active building blocks of several recently proposed setups for realization of Majorana fermions in carbon nanotubes.
