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Effect of a capacitively-coupled ground plane on nanohoneycomb thin films near the insulator-superconductor transition

Description

Abstract:
Previous work has shown that thin films formed by quench condensation of metals onto the surface of porous anodized aluminum oxide (AAO) produces films with a regular hexagonal pattern of pores, and regular film thickness variations between the pores. Near the insulator-superconductor transition, these thickness variations are believed to create superconducting islands, linked by Josephson junctions. This poster examines the possible effect of electrostatic screening, due to capacitance between the film and the aluminum substrate on which the AAO is grown, on the conductive properties of the film in this regime. Techniques for measuring the film-substrate capacitance accurately are also developed.

Citation

Levine, Alexander, "Effect of a capacitively-coupled ground plane on nanohoneycomb thin films near the insulator-superconductor transition" (2015). Summer Research Symposium. Brown Digital Repository. Brown University Library. https://doi.org/10.26300/waff-ds53

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Collection:

  • Summer Research Symposium

    Each year, Brown University showcases the research of its undergraduates at the Summer Research Symposium. More than half of the student-researchers are UTRA recipients, while others receive funding from a variety of Brown-administered and national programs and fellowships and go …
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