论文标题
磁通量在包含约瑟夫森的超导循环中泵送
Magnetic Flux Pumping in Superconducting Loop Containing a Josephson $ψ$ Junction
论文作者
论文摘要
我们证明了一个具有半金属弱连接的约瑟夫森连接，整合到超导环中，可以泵送磁通孔刺穿环路。在这样的交界处，基态相$ψ$取决于半米周围两个铁磁铁的磁矩相互取向。因此，通过微波辐射控制的两个铁磁体之一中磁矩的进攻导致相位$ψ$的积累以及随后在具有不同涡度的状态之间进行切换。所提出的通量泵送机制不需要应用电压或外部磁场，该电压或外部磁场可以在超导旋转型旋转中的电脱钩内存细胞设计。
We demonstrate that a Josephson junction with a half-metallic weak link integrated into the superconducting loop enables the pumping of magnetic flux piercing the loop. In such junctions, the ground state phase $ψ$ is determined by the mutual orientation of magnetic moments in two ferromagnets surrounding the half-metal. Thus, the precession of magnetic moment in one of two ferromagnets controlled, e.g., by the microwave radiation, results in the accumulation of the phase $ψ$ and subsequent switching between the states with different vorticities. The proposed flux pumping mechanism does not require the application of voltage or external magnetic field which enables the design of electrically decoupled memory cells in superconducting spintronics.
