Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 54: Poster Session: Cryotechnique

TT 54.5: Poster

Mittwoch, 22. März 2017, 15:00–19:00, P2-OG3

Novel microstructured superconducting resonator technique for measurements of dielectric polarization echoes — •Anna Pollithy, Andreas Schaller, Sergey Tsurkan, Andreas Reiser, Andreas Fleischmann, and Christian Enss — Kirchhoff-Institut für Physik, Universität Heidelberg, INF 227, D-69120 Heidelberg

The anomalous properties of amorphous solids at low temperatures are governed by tunneling systems, which are theoretically well described as two-level systems in the phenomenological standard tunneling model. These tunneling systems can couple resonantly to electric fields and can be studied by phase coherent methods such as dielectric two-pulse polarization echo measurements.

We have developed a new setup for performing polarization echo experiments on glasses, which is based on microstructured superconducting planar resonators. The resonance frequency and quality factor of such resonators can be predicted with confidence via simulations. Using this setup we aim to carry out echo experiments at different resonance frequencies and short pulse separation time. In the poster we present the new technique and show first experimental results for N-BK7 glass.