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Soft vortex matter in a type-Ⅰ/type-Ⅱ superconducting bilayer

机译:Ⅰ型/Ⅱ型超导双层中的软涡物质

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摘要

Magnetic flux patterns are known to strongly differ in the intermediate state of type-Ⅰ and type-Ⅱ superconductors. Using a type-Ⅰ/type-Ⅱ bilayer we demonstrate hybridization of these flux phases into a plethora of unique new ones. Owing to a complicated multibody interaction between individual fluxoids, many different intriguing patterns are possible under applied magnetic field, such as few-vortex clusters, vortex chains, mazes, or labyrinthal structures resembling the phenomena readily encountered in soft-matter physics. However, in our system the patterns are tunable by sample parameters, magnetic field, current, and temperature, which reveals transitions from short-range clustering to long-range ordered phases such as parallel chains, gels, glasses, and crystalline vortex lattices, or phases where lamellar type-I flux domains in one layer serve as a bedding potential for type-Ⅱ vortices in the other, configurations clearly beyond the soft-matter analogy.
机译:已知磁通量模式在Ⅰ型和Ⅱ型超导体的中间状态有很大的不同。使用Ⅰ型/Ⅱ型双层膜,我们证明了这些助熔剂相可以杂化成许多独特的新相。由于各个磁通量之间复杂的多体相互作用,因此在施加磁场的情况下,可能会出现许多不同的有趣模式,例如类似于软物质物理学中容易遇到的现象的少数旋涡团簇,涡旋链,迷宫或迷宫状结构。但是,在我们的系统中,模式可以通过样本参数,磁场,电流和温度进行调节,从而揭示了从短距离聚集到长距离有序相的过渡,例如平行链,凝胶,玻璃和晶体涡旋晶格,或者其中一层中的层状I型通量域充当另一层中II型涡旋的层理潜力的相,其配置显然超出了软物质类比。

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