论文标题
微桥超导NB环中较高的谐波抗性振荡
Higher harmonic resistance oscillations in micro-bridge superconducting Nb ring
论文作者
论文摘要
我们研究了两种类型的超导介质NB环中的抗性振荡。在简单的超导环设备中，清楚地观察到具有量化磁通量H/2E周期的电阻振荡。另一方面，在平行嵌入两个narrow部件的微桥环设备中，并作为超导型金属 - 高度 - 驱动器连接器起作用，当测量电流良好时，获得了较高的谐波抗性振荡。我们认为，即使在Micro-Bridge NB超导环设备中，也可以检测到如此较高的谐波振荡，在该设备中，设备尺寸比NB的相干长度大得多。
We studied resistance oscillations in two types of superconducting mesoscopic Nb rings. In a simple superconducting ring device, a resistance oscillation with a period of the quantized magnetic flux h/2e was clearly observed. On the other hand, in a micro-bridge ring device where two-narrow parts are embedded in parallel and work as superconductor-normal metal-superconductor junctions, higher harmonic resistance oscillations were obtained when the measurement current was well-tuned. We argue that such higher harmonic resistance oscillations can be detected even in the micro-bridge Nb superconducting ring device where the device size is much larger than the coherence length of Nb.
