Investigation of spin-based functional devices using two-dimensional superconducting layer

为了开发一种新的自旋器件，研究了准二维超导层中自旋相关输运性质。采用光刻和氩离子研磨法制备了双系高Tc超导体晶须晶体和Co薄膜。我们发现，通过平行施加磁场，样品在恒定偏置电流下表现出临界电流与电压的滞回场依赖关系。所得结果表明，这种混合结构在新型自旋电子学器件中的应用具有潜力。

In order to develop a novel spin devise the spin-dependent transport properties in quasi two-dimensional superconducting layer have been investigated. The samples composed of a whisker crystal of Bi-system high Tc superconductor and Co thin film were fabricated by photolithography and Ar ion milling. We found that the samples showed the hysteretic field dependence of a critical current and the voltage at a constant bias current by applying magnetic field parallel to layer. The obtained results suggests a potential for the novel spintoronics device application of such hybrid structures.