低维无序导体在超导转变开始时的磁导率
Magnetoconductivity of low-dimensional disordered conductors at the onset of the superconducting transition
摘要：
无序的二维和三维超导体的磁导率在超导转变的开始解决。在这个政权运输占主导地位的波动效应，我们占来自库珀通道的相互作用的修正。与许多以前的研究相比，我们认为强磁场和各种温度制度，这使得解决现有的差异与实验。具体而言，我们发现饱和的波动引起的磁导率的二维和三维超导体在已经温和的磁场和讨论可能的尺寸交叉在附近的临界温度。令人惊讶的观察是，越接近转变温度，越弱的磁场提供饱和。值得注意的是，来自库珀通道的磁导率的相互作用校正，特别是所谓的Maki-Thompson贡献，即使远离临界区域也仍然很重要。
英文摘要：
Magnetoconductivity of the disordered two- and three-dimensional superconductors is addressed at the onset of superconducting transition. In this regime transport is dominated by the fluctuation effects and we account for the interaction corrections coming from the Cooper channel. In contrast to many previous studies we consider strong magnetic fields and various temperature regimes, which allow to resolve the existing discrepancies with the experiments. Specifically, we find saturation of the fluctuations induced magneto-conductivity for both two- and three-dimensional superconductors at already moderate magnetic fields and discuss possible dimensional crossover at the immediate vicinity of the critical temperature. The surprising observation is that closer to the transition temperature weaker magnetic field provides the saturation. It is remarkable also that interaction correction to magnetoconductivity coming from the Cooper channel, and specifically the so called Maki-Thompson contribution, remains to be important even away from the critical region.
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