论文标题
声子反馈对有限间隙超导体中相位中心动力学的影响
Phonon Feedback Effects on Dynamics of Phase Slip Centers in Finite Gap Superconductors
论文作者
论文摘要
讨论了基于有限元建模和时间依赖性的金兹伯格 - 兰道（TDGL）方程的薄超导电线中相位滑移中心行为的结果。为了与实验更紧密的关系，我们使用了TDGL系统的有限差距公式。 Cooper-Pair凝结波功能的动态方程和电流的表达都比无间隙情况更为复杂。在此基础上，探索了非平衡声子的影响。这些声子本质上可以改变发生相位滑移的几何点的位置。它们还会影响相滑振荡的频率。报告的效果在实验上可检测到，可用于实际设备。
The results on the behavior of phase-slip centers in thin superconducting wires based on finite-element modeling and time-dependent Ginzburg-Landau (TDGL) equations are discussed. For closer relationship with experiments, we used finite-gap formulation of the TDGL system. Both the dynamic equation for the Cooper-pair condensate wave-function and the expression for the electric current are more complex than in the gapless case. On this basis, the influence of nonequilibrium phonons is explored. These phonons can essentially change the location of geometrical points in which the phase slippage takes place. They also affect the frequency of phase-slip oscillations. The reported effects are experimentally detectable and can be used in practical devices.
