Vlasko-Vlasov V K, Colauto F, Benseman T, Rosenmann D, Kwok W-K
Materials Sciences Division, Argonne National Laboratory, 9700 South Cass Ave., Argonne, IL 60439, USA.
Federal University of Sao Carlos, Physics Department, BR-13565905 Sao Carlos, SP, Brazil.
Sci Rep. 2016 Nov 15;6:36847. doi: 10.1038/srep36847.
In an electronic triode, the electron current emanating from the cathode is regulated by the electric potential on a grid between the cathode and the anode. Here we demonstrate a triode for single quantum magnetic field carriers, where the flow of individual magnetic vortices in a superconducting film is regulated by the magnetic potential of striae of soft magnetic strips deposited on the film surface. By rotating an applied in-plane field, the magnetic strip potential can be varied due to changes in the magnetic charges at the strip edges, allowing accelerated or retarded motion of magnetic vortices inside the superconductor. Scaling down our design and reducing the gap width between the magnetic stripes will enable controlled manipulation of individual vortices and creation of single flux quantum circuitry for novel high-speed low-power superconducting electronics.
在电子三极管中，从阴极发出的电子流由阴极和阳极之间栅极上的电势调节。在此，我们展示了一种用于单个量子磁场载流子的三极管，其中超导薄膜中单个磁涡旋的流动由沉积在薄膜表面的软磁条带条纹的磁势调节。通过旋转施加的面内磁场，由于磁条带边缘磁荷的变化，磁条带势会发生变化，从而使超导体内部的磁涡旋加速或减速运动。缩小我们的设计尺寸并减小磁条带之间的间隙宽度，将能够对单个涡旋进行可控操纵，并为新型高速低功耗超导电子学创建单磁通量子电路。
