论文标题
超导体在通量流动方面的电导率
Conductivity of superconductors in the flux flow regime
论文作者
论文摘要
我们发展了系统参数的随机空间波动（例如差距幅度量$δ$（r）和扩散系数d（r），我们就会在通量流动状态下的II型超导体的电导率理论。我们发现对电导率的贡献与非弹性松弛时间$τ_{in} $成正比，该{in} $比弹性放松时间长得多。这种新的贡献是由于Debye型松弛，并且可能比Bardeen和Stephen引起的常规通量流动性大得多。预计新的贡献将在低温和磁场的清洁超导体中占主导地位，而磁场小于$ h_ {c2} $。
We develop a theory of conductivity of type-II superconductors in the flux flow regime taking into account random spatial fluctuations of the system parameters, such as the gap magnitude $Δ$(r) and the diffusion coefficient D(r). We find a contribution to the conductivity that is proportional to the inelastic relaxation time $τ_{in}$, which is much longer than the elastic relaxation time. This new contribution is due to Debye-type relaxation, and it can be much larger than the conventional flux flow conductivity due to Bardeen and Stephen. The new contribution is expected to dominate in clean superconductors at low temperatures and in magnetic fields much smaller than $H_{c2}$.
