Measurements of microwave-enhanced superconductivity in aluminum strips
Measurements of microwave-enhanced superconductivity in aluminum strips
复制标题
铝带微波增强超导性的测量
DOI：
--
复制
发表时间：
1979
期刊：
影响因子：
--
通讯作者：
J. Dobben
中科院分区：
文献类型：
--
作者：
J. Pals;J. Dobben
实验研究了微波辐照对铝带超导临界电流和临界温度的影响。微波引起的临界电流增强存在于微波功率范围之外，在此范围内超导电性的不连续消失曾被报道过。发现微波强化的临界温度比平衡值高出8%。弄清微波加热在这些实验中的作用是至关重要的。测量范围扩大到了比以前报道的更低的温度(40MK)和更高的频率(36 GHz)。讨论了这些观测结果在多大程度上符合增强超导电性的微观模型。
Experiments investigating the influence of microwave irradiation on the critical current and the critical temperature for superconductivity in aluminum strips are presented. The microwave-induced enhancement of the critical current is shown to exist beyond the microwave-power level, at which a discontinuous disappearance of superconductivity was previously reported. Microwave-enhanced critical temperatures are found up to 8% above the equilibrium value. It is essential to discern the role of microwave heating in these experiments. The measurements are extended to a lower temperature (40 mK) and to higher frequencies (36 GHz) than previously reported. It is discussed to what extent the observations fit qualitatively into microscopic models for enhanced superconductivity.