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Showing 1 to 4 of 4 for “"Scanning SQUID Microscope"”.
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Constructing and Characterizing a Scanning SQUID Microscope for a Cryogen Free Dilution Refrigerator
Superconducting quantum interference devices, or SQUIDs, are highly sensitiveto magnetic flux and can be used to perform magnetic imaging at cryogenic tem- peratures. In this dissertation, I describe the first scanning SQUID microscope in a cryogen-free dilution refrigerator. First, I briefly …
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Imaging vortices in superconducting weakly coupled arrays
… instrument used to perform the experiments, a Scanning SQUID Microscope (SSM), is discussed. The vortices in the superconducting arrays have weak magnetic fields that change over small length scales, requiring certain techniques for measurement. Also presented are the numerical calculations …
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Vortex distributions and dynamics in superconductors near surface steps and sample edges studied by scanning SQUID microscopy and critical current measurements
… transport properties of vortices. We have used a Scanning SQUID Microscope (SSM) to directly image the vortex distributions in various superconducting systems, including crystals with naturally cleaved surface steps as well as patterned superconducting thin films with etched surface trenches. The …
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Studies of magnetic vortices in superconductor networks and clusters by scanning SQUID microscopy
We have developed a Scanning SQUID Microscope (SSM) to study the configuration of trapped magnetic vortices in two-dimensional superconductor arrays and clusters. The SSM scans a dc SQUID detector over the array surface, achieving better than 10$\mu$m spatial resolution over a scan range up to 1cm …