标题： 非互易约瑟夫森电流通过锥形磁体 显示英文标题

标题： Nonreciprocal Josephson current through a conical magnet

摘要： 超导体可以形成理想的二极管，在正向方向传输无耗散的超电流，而在反向方向传输耗散电流。 约瑟夫森二极管已被证明是一种有前景的设计，其中两个超导体之间的结是最弱的环节，因此提供了主要的机制。 我们这里提出一种基于具有锥形自旋结构的单一磁性材料的约瑟夫森二极管。 螺旋自旋旋转产生类似于Rashba的能带分裂，其与旋转周期成反比。 结合由非共面自旋纹理的时间反演对称性破缺引起的Zeeman分裂，这导致了接近磁性约瑟夫森结的$0-\pi$转变的大二极管效率。 显示英文摘要

摘要： Superconductors can form ideal diodes carrying nondissipative supercurrents in the forward direction and dissipative currents in the backward direction. The Josephson diode has proven to be a promising design where the junction between the two superconductors comprises the weakest link and thus provides the dominant mechanism. We here propose a Josephson diode based on a single magnetic material with a conical spin structure. The helical spin rotation produces Rashba-like band splitting inversely proportional to the rotation period. Together with the Zeeman splitting caused by the time-reversal symmetry breaking of the noncoplanar spin texture, this results in a large diode efficiency close to the $0-\pi$ transition of the magnetic Josephson junction.