论文标题
扩散的Sinis和Sifis连接中的多个Andreev反射
Multiple Andreev reflections in diffusive SINIS and SIFIS junctions
论文作者
论文摘要
我们研究了具有低透明界面的长扩散超导体（S） - 正常金属（N） - 渗透连接连接的多个Andreev反射。假设在弱链路中有强烈的热化，我们计算了电流依赖性$ i（v）$。在中等温度下，$ e_ \ mathrm {th} \ ll t \llδ$，电流由非合并的多个Andreev反射主导，并通过分析获得。结果被推广到铁磁连接处。我们发现交换场会产生亚谐波差距结构的非平凡分裂。这种效应依赖于弱连接中的SFS连接中的热化和消失。
We study Multiple Andreev Reflections in long diffusive superconductor(S)-normal metal(N)-superconductor junctions with low-transparency interfaces. Assuming strong thermalization in the weak link we calculate the current-voltage dependence $I(V)$. At intermediate temperatures, $E_\mathrm{Th}\ll T\llΔ$, the current is dominated by noncoherent multiple Andreev reflections and is obtained analytically. The results are generalized to a ferromagnetic junction. We find that the exchange field produces a non-trivial splitting of the subharmonic gap structure. This effect relies on thermalization and vanishes in SFS junctions with no energy relaxation in the weak link.
