Berlin 2024 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 59: Transport: Poster

TT 59.7: Poster

Mittwoch, 20. März 2024, 15:00–18:00, Poster E

Coplanar on-chip resonators for kinetic inductance measurements on 2D-crystals — •Lorenz Bauriedl, Sami Campopiano, Alexander Kirchner, Nicola Paradiso, and Christoph Strunk — Institute for Experimental and Applied Physics, University of Regensburg, 93040 Regensburg, Germany

Experimental access to the small kinetic inductance of low-resistive metallic superconductors is traditionally achieved by increasing the ratio of sample length to cross section. This limits one to materials available at sufficient size and renders measurements on exfoliated 2D superconductors hardly possible. We devised a method to access the inductance signature of materials such as NbSe₂. Incorporating a NbSe₂ nanowire into a high Q-factor on-chip niobium resonator enables us to measure the inductive response, while DC ports allow simultaneous investigation of transport properties. Spiral inductors fabricated in tandem with the resonator serve as low-pass filters for the DC ports and create the high impedance enviroment necessary to detect even minute changes in the inductance.

Keywords: coplanar resonator; NbSe2; 2D materials; high frequency