摘要
我们认为标准 GinzburgLandau 的一条简单途径免费精力为一根电线功能滑倒学习超导的 nanowires 的性质,并且分析量和热地激活的阶段的问题。在一个人能考虑的如此的系统,为阶段的可能性滑倒被创造由于不仅热而且由于一个超导的顺序参数的量变化。我们分别地获得免费能量,熵,特定的热和偏爱水流的一些表情。偏爱水流我是温度和超导的 nanowires 的长度的功能,并且让一个量阶段滑倒。我们获得在 hysteretic 的超导抵抗的切换的随机的动力学偏导水流的超导的 nanowires 经历阶段滑倒变化,并且获得交换水流的分发。我们的结果能与超导的 nanowires 在现代实验被验证。
We consider a simple approach of standard Ginzburg-Landan free-energy functional for a wire to study the properties of superconducting nanowires, and analyze the problem of quantum and thermally activated phase slips. In such systems one can consider a possibility for phase slips to be created not only due to thermal but also due to quantum fluctuations of a superconducting order parameter. We obtain some expressions of the free energy, the entropy, the specific heat and the bias current, respectively. The bias current I is a function of the temperature and the length of superconducting nanowires, and has a quantum phase slip. We obtain the stochastic dynamics of superconductiveresistive switching in hysteretic current-biased superconducting nanowires undergoing phase-slip fluctuations, and obtain the distribution of switching currents. Our results can be verified in modern experiments with superconducting nanowires.
基金
Supported by the National Natural Science Foundation of China under Grant No. 10974167