We observe a hysteretic superconducting switch effect in NbSe${}_2$ - CrGeTe${}_3$ superconductor/ferromagnet bilayer structures. The switching effect occurs robustly at perpendicular external magnetic fields between $80<B<130$ mT (confirmed through angle resolved magneto-transport studies). This leads to a strong dependence of the magnetoresistance hysteresis with applied critical variables. We also find that the temperature at which the resistance falls to zero depends strongly on the sweep direction of the external perpendicular magnetic field and also on the constant current passing through the superconductor. We suggest that this is due to a domain structure transformation in CrGeTe${}_3$ which in turn tunes the vortex motion in NbSe${}_2$.

我们在NbSe中观察到磁滞超导开关效应${}_2$ -铬酸盐${}_3$超导体/铁磁体双层结构。开关效应在垂直的外部磁场之间强烈发生$80<乙<130$mT（通过角度分辨磁传输研究确定）。这导致磁阻滞回与所应用的临界变量的强烈相关性。我们还发现，电阻降至零时的温度在很大程度上取决于外部垂直磁场的扫描方向，也取决于流经超导体的恒定电流。我们建议这是由于CrGeTe中的域结构转变${}_3$ 依次调整NbSe中的涡旋运动${}_2$。