Regensburg 2025 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 11: Superconductivity: Poster

TT 11.67: Poster

Monday, March 17, 2025, 15:00–18:00, P4

Characterization of Ti/Au Bilayer at mK — •Martin Schwendele, Chrsitain Enss, Andreas Fleischmann, Daniel Hengstler, Ashish Jadhav, Lukas Münch, Andreas Reifenberger, and Loredana Gastaldo — Kirchhoff Institute for Physics, Heidelberg University

Low temperature microcalorimeters reach high energy resolution in a wide energy range thanks to very sensitive thermometers. Magnetic penetration depth thermometers (MPTs) would represent a very interesting alternative with respect to commonly used metallic magnetic calorimeteres (MMCs) and transition edge sensors (TESs).
We present the study of Ti/Au bilayers, typically used in TES as sensible material for MPTs. Films with different ratios between the superconducting layer and the normal conducting layers have been produced using sputtering technique. We discuss the dependence of the transition temperature as a function of the thickness ratio as well as the estimation of the penetration depth as a function of temperature.

Keywords: SQUIDs; Superconductivity; Temperature Sensor