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首页> 外文期刊>Physica, C. Superconductivity and its applications >Direct observation of vortex lattice transitions in mesoscopic superconducting single crystals using STM
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Direct observation of vortex lattice transitions in mesoscopic superconducting single crystals using STM

机译:使用STM直接观察介观超导单晶中的涡旋晶格转变

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Superconductors containing mesoscopic artificially-engineered defects Are orders of magnitude more resistant to the destructive effect of the magnetic field. We present scanning tunnelling microscopy study of the vortex lattice configurations in a mesoscopic single crystal superconductor-normal metal heterostructure. We observe co-existence of a strongly interacting multiquanta vortex lattice and interstitial Abrikosov vortices that form a composite magnetic flux distribution which undergoes a series of transitions between different topological configuration states. The vortex configuration states are strongly dependent on the nanoscale architecture of the superconductor and applied magnetic field. Scanning tunnelling spectroscopy images show the evolution of vortex topological states when the number of flux quanta in the system changes. (c) 2006 Elsevier B.V. All rights reserved.
机译:包含介观人工工程缺陷的超导体对磁场的破坏作用更具抵抗力。我们目前在介观单晶超导体-正常金属异质结构中的涡流晶格配置的扫描隧道显微镜研究。我们观察到强相互作用的多量子涡旋晶格和间隙Abrikosov涡旋共存,形成复合磁通量分布,并经历了不同拓扑结构状态之间的一系列过渡。涡流的配置状态在很大程度上取决于超导体的纳米级结构和所施加的磁场。扫描隧道光谱图像显示了系统中通量的数量发生变化时涡旋拓扑状态的演变。 (c)2006 Elsevier B.V.保留所有权利。

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