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VORTEX CONFINEMENT PHENOMENA IN MESOSGOPIC SUPERCONDUCTORS

机译:介晶超导体中的涡旋约束现象

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We report on vortex confinement phenomena in mesoscopic superconducting samples of different connectivity: singly connected dot, dot with two microholes ("antidots") and dot with four antidots. For these structures, we study the crossover from the "network" regime in low fields to the giant vortex state in high fieldd. Flux dynamics and pinning are investigated in superconductors with huge regular arrays of artificial pinning centers (antidots or magnetic dots). In films with an antidot lattice, Shapiro steps, induced by rf irradiation, have been observed. In films with a lattice of magnetic dots, stable vortex configurations have been identified using scanning Hall probe microscopy.
机译:我们报告了在不同连通性的介观超导样品中的涡旋限制现象:单连接点,具有两个微孔的点(“对点”)和具有四个对点的点。对于这些结构,我们研究了从低场的“网络”状态到高场的巨大涡态的交叉。在具有巨大规则排列的人工钉扎中心(反点或磁点)的超导体中研究了磁通动力学和钉扎。在具有解毒点阵的薄膜中,已经观察到由射频辐射引起的夏皮罗阶梯。在具有磁性点阵的薄膜中,使用扫描霍尔探针显微镜已鉴定出稳定的涡旋构型。

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