超导纳米线与外电阻并联的动力学
Dynamics of superconducting nanowires shunted with an external resistor
摘要：
我们提出了第一个研究超导纳米线分流与外部电阻，面向理解和控制纳米线的相干性和耗散。通过测量V-I特性的演变以及在改变分流电阻和温度时开关和再俘获电流的分布来探讨动态。实验的理论分析表明，随着分流电阻值的减小，动力学变得更加连贯，可能是由于稳定的相位滑移中心的线，此外，开关电流接近Barthel的预测的平衡破坏电流。通过理论和实验之间的详细比较，我们取得了进展到识别制度中的准一维线可以有效地描述了一个零维电路模型类似于RCSJ（磁阻和电容并联约瑟夫森结）模型的Stewart和McCumber。除了其基本意义外，我们的研究还对一系列有前途的技术应用产生了影响。
英文摘要：
We present the first study of superconducting nanowires shunted with an external resistor, geared towards understanding and controlling coherence and dissipation in nanowires. The dynamics is probed by measuring the evolution of the V-I characteristics and the distributions of switching and retrapping currents upon varying the shunt resistor and temperature. Theoretical analysis of the experiments indicates that as the value of the shunt resistance is decreased, the dynamics turns more coherent presumably due to stabilization of phase-slip centers in the wire and furthermore the switching current approaches the Bardeen's prediction for equilibrium depairing current. By a detailed comparison between theory and experimental, we make headway into identifying regimes in which the quasi-one-dimensional wire can effectively be described by a zero-dimensional circuit model analogous to the RCSJ (resistively and capacitively shunted Josephson junction) model of Stewart and McCumber. Besides its fundamental significance, our study has implications for a range of promising technological applications.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
