SKM 2021 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 22: Poster Session: Disordered and Granular Superconductors: Fundamentals and Applications in Quantum Technology
TT 22.6: Poster
Donnerstag, 30. September 2021, 13:30–16:00, P
Resonant microwave spectroscopy close to the superconductor to insulator transition — •Maximilian Kristen1,2, Jan Nicolas Voss2, Micha Wildermuth2, Yannick Schön2, Andre Schneider2, Hannes Rotzinger1,2, and Alexey V. Ustinov1,2,3,4 — 1Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie — 2Physikalisches Institut, Karlsruher Institut für Technologie — 3Russian Quantum Center, Skolkovo, Moscow, Russia — 4National University of Science and Technology MISIS, Moscow, Russia
High kinetic inductance circuits in the vicinity of the superconductor to insulator transition (SIT) are an interesting research topic not only for applications like quantum circuits or detectors, where the SIT poses a limit on the maximum available kinetic inductance of a wire, but also as a tool to study fundamental aspects of superconductor physics.
We perform microwave measurements on resonators made from highly resistive films. As a material of choice, we use granular aluminum at high oxide levels, due to the low intrinsic loss and the possibility to approach the SIT from the superconducting side. We focus on the low frequency noise behavior of these resonators and present the latest experimental results